so, first off, this is a suggestion/discussion for 2.3, not 2.2
now with THAT out of the way, on to the Mediator
the Mon Calamari Mediator Battlecruiser is one of the most weirdly represented off all Mon Cal ships. due to it's only size comparison is Viscount is at least twice as large as it, it has had a large variation of Designs, specs, and purposes. while others disagree, here is my opinion:
Mediator is a warship at best only 50% of the size of Viscount, but, rather than 8,500 meters long, it is Probably closer to 6,000 meters long. it's role, as i envisioned it, is a Carrier/Battleship that also serves as a Task force command vessel. rather than to slug it out with Imperial SSDs, it would be built to wipe out SDs and Battlecruisers it faced.
a reasonable armament i see would be 3 times that of the ISD I/II, plus extra anti-fighter weapons, and a hangar for 16 squadrons(more than the endurance, i know, but is is also 4 times longer, plus with even more mass. with strong armor, customary mon cal Shields, and NR ingenuity, while not designed to destroy it, it would be able to Hold off a Bellator for others to destroy it.
potential shape design would be like this:
http://media.moddb.com/cache/images/mods/1/33/32884/thumb_620x2000/Mon_Calamari_fleet_gathering.jpgor this:
http://media.moddb.com/cache/images/mods/1/19/18461/thumb_620x2000/Mediator1.jpgboth times largest ship in photo
while this might not happen, due to 2.3 redoing EoTH ground, as well as second touch for warlords/imperials, and possible additional Hapan units, this may not happen, however, it brings me to my next point.
in the NJO compilation mod for ICW, LegostarwarsEU came up with a brilliant approach to the build bar overload problem for the NR, which could be carried over: there is a NR membership build with is required to build a group of 8 or so core units, while all planets have indigenous(local units) on them. if carried over to ICW, this would fix buildbar overload, plus allow for any units people may want to add, and give better representation for the elements of the NR