Straferun doesn't translate bad at all imo. Some games (Doom 2 hah) have that bug.
Well since there's jump, what about a walk/sneak movement (so you don't make any noise walking) ? I think it would be good for 1v1.
I'd really like an option to disable auto weapon switch aswell, it can get annoying sometimes
Also, a couple new game modes would be nice. particularly clan arena.
And if you want a crazy sky in the pie idea, how about the face mapping feature that was planned for perfect dark?
Oh and after you mentioned it i'm really digging the wallrun