I don't care as long as they wear armor, no skin tight clothes, aspect warrior use armor, half of them even heavy armor, no freaking yoga pants.
Dark Eldar are not in the game, but this guys will be at launch. (This Striking scorpion as made by Razyda, a forum user) Even the guys (or girls) with lighter armor are fully protected.
I think the voicework is almost more important than the looks when it comes to this. The armour should be subtly different, but not too much. PS2 did a good job with the look, imo. (But not the voices. Oh god that default NC female.)
and then we can have the hyper sexytimes. The craft world eldar are pretty conservative... i mean there is some skin tight clothes going on but thats cause alot of hanging jung gets in the way during combat.