Well, for Ithor... in all due honesty, as far into the Expanded Universe books as I've gone are three-quarters of Timothy Zahn's 'Heir of the Empire' trilogy, a couple others in some time after Leia has her children, a few books (and comics) during the Clone Wars, a few others during the Original Trilogy-and I've steered well away from the New Jedi Order series as a whole. I've never had the luck of reading any books set during that time... and just knowing that they killed Chewie makes me unwilling to do so (that's not mentioning, you know, 'Darth Solo' and all)...
so Ithor appeared on this dimension untouched by the wars and it becoming a gigantic pyre, and those who don't even know that it happened are surprised about the fact.
Rumours, though, are that some Ithorians really didn't liked the whole idea.. and there's a very tiny spot, just about 10 yards wide and just as long, deep within the Ithorian jungle... pretty full of the taint of the Dark Side...
and heaven only knows WHAT triggered such a thing to appear.
As for cybernetics... there's a few ideas here and there (and one thing to note, not even on Cyberscape there's good rules for (well, not as 'good' considering this setting has GITS-style and other more crazy styles of) full-conversion cyborgs.
And on other notes, I was thinking about two factions (one new, one mentioned elsewhere):
+FACELESS GOONS, INC: Where 'jobbers' make their weird trade, this 'agency' has three major divisions: one is where the super-powered 'jobbers' (guys like the Shocker, for example) are assigned their jobs, other where more 'regular' goons are rented out, and an 'el cheapo' division that mass-produces cloned goons that are quite expendable (you rent the cloning facilities not by the number of goons, but by the hour of production). The clones for some weird reason (although widely believed it's because the cloning vat is pre-set that way), are commonly outfitted with the uniform of the forces of Galactor.
+CELESTIAL BEING: The paramilitary organization from 'Gundam 00'. Their objective is the same-although occasionally it has made things crazier on the battlefield (that with one faction shooting everything in sight and the others not knowing who to prioritize as top target). It is widely believed that they are supported by the United Emirates of Orb.