Carnor Jax, Lumiya and Sarcev Quest pulled off an incredible coup with the Imperial Ruling Council. They managed to poison and subtly direct Emperor Palpatine to his early death and prop Jax up as the new Ruler of the Empire with the Council's backing. However they did not anticipate the destruction of Byss, the Shadow Hand Armada, The Eclipse II and the Galaxy Gun(honestly who could) that cost them nearly all the centralized Imperial Fleet not controlled by the various Warlords, the invaluable Sith holocrons, texts and lore crucial to both Lumiya and Jax's progression as Sith Lords and the centralized power structure of the Imperial High Command with its codes on the Byss Citadel. This left Jax's Crimson Empire pathetically weak and ignored by the Imperial Warlords.
But what if, R2D2 does NOT send the Eclipse II on its fateful last jump? This leaves the super ship, the Galaxy gun, and the Byss Armada all intact. Also Jax and Lumiya now have access to all Palpatine's hoarded Sith knowledge to grow their own power in the Dark Side of the Force. However it also leaves many more of the Royal Guard alive and knowing soon enough(thanks to the physician's confession to the NR overheard by a lone Royal Guard) that Jax and the Council were behind Palpatine's final death. Who does Byss side with? Who becomes the new Emperor? What changes?