Frankly, never thought of this from such a perspective but mainly because it sounds very extravagant to say the least. This being reinforced by the fact that it was never exploited in the OT. Dark = Sith, Light = Jedi.

Regarding the Thrawn Trilogy I think it's being overrated and when it comes to RATING I'd rather agree with 2-3 stars being given by Amazon buyers. It's interesting that the most of what I managed to find over the internet refers to it in a more flattered manner in than reviews to ROTJ though in terms of characterization, plot progression and characters interaction the latter FAR surpasses the Thrawn Trilogy that in places goes nowhere and reads pretty boring. That's just MY opinion, but the one I made when reading after being encouraged by multifold gushes of the passionate admirers. The spirit of SW, ESB, ROTJ is gone from these books. It maybe used to be OK in the absence of other stories (Stover, Stackpole) that are said have far better storylines and writing than Zahn whose dialogues tend to remind the prequelish approach and that accent not on the main but background characters such as Wedge etc that we didn't see much in the movies.