Feedback on Ras Val'kor

[Ras Val'kor]

So I wanna keep this as honest as possible since I personally feel like I've been improving, but I would like some outside feedback on how others view Ras Val'kor as a person/character. I haven't written him for very long, but what I have gained from it thus far is a character with more depth than any Sith I've created (or so I think). Out of any idea that stuck, Ras should have been one to fall off and never see the light of threads again; however, he's become a mainstay for plot and development.

I'd like to see how else I could evolve him with legitimate critique, nothing less.

Have at it, ladies and gents.