Cover system would be stupid for FPS.

Ragdoll is dumb, but gore would be nice.

I also think that achievement for reaching Prestige 10 Level 55 would be dumb because some people dont might not want their name next to an ugly symbol. But other online acheivements would be cool, like win 10 games of each gametype or get 100000 kills.

Future shooter, not like Halo, but sometime far from now.

Longer Campaign.

Recognizeable maps. I forget most map names because they are simple one worded names, like Strike, Backlot, and District. Ive been playing CoD4 for as long as SOCOM II, I know more S2 maps and names than CoD4's.

I dont think more guns would be necessary, mostly because people will only stick to the ones that are the best. Same amount of guns.

Run with a buddy to steal kills lol.

Team Death Match, Free For All, Team Tac, Domination.

I mostly use weak guns like skorpion, snipe with m40 with bandolier and stopping power or use m16 wheneveryone on the other team uses it.