I think that a lightsaber isn't even "sharp", it have a veeeeeeeeeeeeeery high temerature, to it doesn't "cut". So there sholdn't be ANY blood from a lightsaber wound (but a vibroblade is completely another thing ).
Revan of course! Becouse he had coolest outfit and was strategical genius. I did like Malaks fighting style, but he had ugly outfit and was bigger then evryone else so i didnt like him so much.
IMO immunity to lightsaber attacks make your char too hard to kill (if you can deflect blaster shots). How about you get half of lihtsaber dmg (armor cant cover whole body and let you move normaly)