So this is just a concept as we wait for the much anticipated 2.2. I don't know if it will go anywhere, but I am looking into the XMLs and how to mod EaW right now. The goal of this concept is look at what would be involved in filling out an ahistorical Galactic Civil War with as many of the involved factions as possible.
Remaining notable Imperial Remnants:
In-game: Imperial Remnant, Pentastar Alignment, Greater Maldrood, Empire of the Hand, Zsinj's Empire, Eriadu Authority, Ciutric Hegemony, Zero Command, Corporate Sector Authority
The Kaarenth Dissension: The Kaarenth Dissension is centered on an old Clone Wars base near the Pentastar Alignment as well as a surviving Worldcraft turned into a repair station in the Spawn Nebula. The Dissension constructs new craft, but most of its forces are thousands of outdated Republican craft that became outdated and were rerouted to this Outer Rim base for years during the Empire's reign. This was done by former Imperial assassin Ennix Devian. Other major members of the Dissension include General Bernard Vota, Trooper Lonkin and Captain Meres Ulcane. While the Dissension was founded with the ideal of focusing on the continuation of Palpatine's Human High culture policy, they put on a public face that claimed the opposite and attempted to incite alien races against the New Republic. The Dissension would later change its name to 'The Restored Empire'.
The Empire Reborn: Founded by the Firrerreo Dark Jedi, Lord Hethrir, the Empire Reborn was largely focused on the training of Dark Jedi and the pursuit of ultimate power by Hethrir himself. The faction was located in the outer rim near Mon Cala, centered around the Crseih Research Station. Major characters included Admiral Galak Fyyar, the Extra-Dimensional entity Waru, High Inquisitor Antinnis Tremayne, Lady Ucce, Rodian gangster Reelo Baruk and later the Dark Jedi Desann and Tavion Axmis. In addition to training a large force of Dark Jedi known as 'The Reborn' and 'The Empire Youth', the Reborn's unique forces included Shadowtroopers, the Worldcraft Rebirth and their capital ship, the heavy carrier Doomgiver.
The Centrality: Located in the outer rim beyond Hutt space and the Greater Maldrood, the Centrality is a former vassal of the Galactic Empire, nominally retaining its independence despite the Empire's involvement through puppet rulers. Their head of government is known as the Scrivinir, currently Ottdefa Tavell Geen. Their fleet is headed by Admiral Sris Lehhett and includes mostly weaker and older Imperial ships that Palpatine had shipped out their way to reinforce his first puppet ruler, the Tund Sorceror Rokur Gepta. These ships included Dreadnought class cruisers and Lancer class frigates with its command ship, the Wennis being described as a Trowel shaped battle cruiser with a dead black hull, 24 starfighters or more and "continent destroying hell projectors". The Centrality may have access to the Sorcerers of Trund.
The Central Committee of Grand Moffs: After the Emperor's death and the failure of Sate Pestage, a number of Grand Moffs united, gaining the allegiance of 2 Grand Admirals (Miltin Takel and Rufaan Tigellinus) and the crime lord of Kessel, Trioculus, who they tried to pass off as Palpatine's mutant son. Despite early successes, the Committee was undermined by infighting and Trioculus' growing insanity, resulting in the death of both Grand Admirals. Had Trioculus been more stable, or the Committee held together better, they might have been a truly dangerous foe. The Committee was made up of the Grand Moffs; Bertroff Hissa, Dunhausen, Thistleborn, Muzzer and Vilim Disra with Bertroff as its leader and Trioculus as its public figurehead. Their flagship was the Moffship, a Strike-class medium cruiser of a different design than normal, more resembling a traditional Imperial triangle. Tigellinus commanded the Star Destroyer Avatar and Takel commanded the Imperial Class Star Destroyer Magic Dragon. Extrapolation: Sergus Lanox, captain of the Victory class Imperial Hazard was awarded a medal by Miltin Takel and may have had some loyalty to him. This captain was still alive in 11 ABY (Long after the Committee's end) and believed Palpatine's death marked certain doom for the Empire. Having him with this faction could make sense, if he believed Trioculus was the Emperor's son, or that this deception would benefit the Empire. other characters may include Rajah Ubooki, a male Bimm and former Imperial Intelligence agent who posed as a 'Prophet of the Dark Side' named Kadann to first support Trioculus, and later try to usurp him, and Captain Dunwell, a Whaladon hunter. Ubooki commanded a gold-coloured ship called The Scardia Voyager.
Minor Imperial Remnants and Warlords:
In-game: Prentioch's Dominion, Elrood System, Antemeridian Sector, Oplovis Sector
X1's Empire: Led by the Dark Jedi known as X1, a clone of the Jedi Falon Grey raised on Kamino, this force is composed largely of soldiers created by X1, but also of the Imperials who were under his command at the time of Endor, since he had risen through the ranks to command an unnamed Executor Class Star Destroyer. With the death of the Sith lords, X1 seized control of Mustafar and began scrounging for anything he could use to increase his forces. He activated many abandoned CIS forces and began the creation of a new clone army with a wider variety of templates. His forces included Imperial class SDs, CIS battle droids (B2s, droidekas, IG-100 MagnaGuards, assassin droids), vulture droids, stormtroopers, dark troopers, Royal Guard survivors, TX-130T tanks, AT-STs, AATs, TIE defenders, TIE Advanced, other TIEs, Dark Jedi clones and cloned wookies.
Shadowspawn's Empire: Led by former director of Imperial intelligence, Cronal, also known as Blackhole and Shadowspawn, this faction is based primarily on Mindor. utilizing At-Ats, Shadow Stormtroopers, Royal Guards and Sithspawn, Cronal controls a devastating ground force. In space he commands the Imperial 2 class SD Vengeance II and may have been backed up by such characters as Captain Jeffren Brek, Colonel Adrick, Dark Jedi Namman Cha, GC-1000 (Group Captain Klick). Kar Vastor and Nick Rostu.
The Gargon Imperium: Seized from under Miltin Takel's nose by competing Grand Admiral Josef Grunger, Gargon is a wealthy staging point from which Grunger intends to take his fleet of 30 ISDs with support vessels and the SSD Aggressor and push for the core worlds.
The Corellian Sector: Controlled by Grand Admiral Danetta Pitta in a torpedo sphere.
The Lambda Sector: Controlled by Moff Par Lankin, Governor Serdif Tount and Rodin Baem.
Sector 5: Nominally under the control of Grand Moff Cinzero Gann, Sector 5 is barely united and most of Gann's underlings, such as Moff Brill, became their own distinct warlords. In Brill's case he fortified the world of Prakith and called it the 'Constitutional Protectorate of Prakith'. Other deep core warlords who may have begun under Gann's control included Malfkla Yzu, Moff Feleea, and Moff Relans.
Kathol Sector - Moff Kentor Sarne
Wornal Sector - Moff Eyrgen
Vatha Sector - Admiral Fonada
Wild Space - Moff Delurin
Illisurevimurasi Sector - Moff Bliss Shargael
Trulalis Protectorate - Adalric Brandl
Other: Moff Walang Grazz, Arnothian, Lon Donell, Roganda Ismaren, Lumiya, Mils Giel, Admiral Kraven, Saz Tyrson
Non-Imperial Factions:
In Game: Hapes Consortium, New Republic, Duskhan League
The Hutt Cartels: Includes such notorious figures as Zorba Desilijic Tiure, Rotta Desilijic Tiure, Arok, Marlo, and possibly Vedo Anjiliac Atirue and Queen Jool depending on their age at this time period. With no stated death in legends, Cad Bane could also be back to working for the Hutts with the fall of the Empire. The Hutts have suffered a lot in the preceeding decades, losing Jabba, and with him many southern holdings such as Hypori. Allowed to continue their illegal activities due to the goods they provided the Empire, the Hutts had essentially become a vassal state. With the fall of the Empire, however, and the return of Zorba (as incompetent as he often was, he still held a lot of sway) the Hutts are ready to take on the Maldrood, Centrality and Zann Consortium to reclaim their place as the masters of the underworld and solidify their territorial boundaries. The Hutts could at the very least use a number of existing assets such as pirate skiffs, headhunters, y-wings, mercenaries, etc... Unique units might include Huttian Star Yachts, Pirate Barges, Gamorreans, Nikto, and likely much more.
The Zann Consortium: High off of his successes in recent years, the egotistical Tyber Zann, still controlling several systems such as Ryloth and Hypori, has made an enemy of everyone; the Imperial Remnant, Hutt Cartels and the New Republic. While he does control a sizeable number of pirate forces and is well funded by his illegal operations, it is unlikely he will survive the retaliation of so many aggrieved parties, unless he gets lucky, and they are more worried about fighting each other than him. Other major characters include Urai Fenn and perhaps a dejected Silri who has returned since nothing ever became of her sith soldier plot.
Mandalore: Throwing off its Imperial yoke, Mandalore is looking towards a brighter future. Led by the current Mand'alor, Fenn Shysa, and garrisoned by the new Mandalorian Protectors, Mandalore is one of the few factions that is not an enemy to the New Republic in this time. Much of Mandalore's space forces would be centered around old ships and scavenged pirate vessels, but the skill of the Mandalorian soldiers on the ground and in their fighter escorts is what truly makes them a force to be reckoned with.
More 'Out-there'/Not likely to happen:
Yuuzhan-Vong
Ssi-Ruuk
The Colony
Ngai
Tof (Their ships have sails and look like old age of sail vessels, which, depending on the artist, could either be the dumbest thing ever, or a really cool design)