Sorry mate, you're about the 50th person to suggest that. Why make the 750th CS clone? Why not make a mode that's more suited to GTA's gameplay?
GTA:Strike?
i just started thinking of some kind of a new mode
How about an obstacle course? a HUGE course, it'll have some stuff you'll need to to on foot, by bike, by car etc. If you touch the ground with your feet on a place where it isn't allowed, you would be dead (yeah, i'm cruel) offcourse, a lot of new models and textures need to be made offcourse, but that wouldn't be too hard to do (well, modelling wouldn't be too hard, textures will be )
so...what do you think of this?