I wish this game had co-op.
Many times while scoping out a base I wish I was sniping for someone who was going in, calling out info over the headset. Or driving with a gunner.
Still a great game, though.
Since i'm indulging in wishful thinking, other things I'd like.
* More detailed personal inventory. Allow me to carry as much equipment as I can, but have it weigh me down and limit my movement. Also allow me to store weapons on vehicles.
* More realistic weapons/ammo management. Make ammo cheap but only avaliable in a few locations. Everything else must be scrounged from the field (right now as it stands there is effectively unlimited ammo). It would be very satisfying for me to be able to walk into a safehouse and see AK-47s and other guns i've collected lined up on a gun rack, boxes of ammo, grenades, etc. I guess what I really want is to combine Fallout 3 and Far Cry 2 into one game.
* Smarter enemies, especially in vehicles. They shouldn't try and ram me when i'm sitting in a turret on the back of a jeep blasting away. I would expect them to park some distance away, or circle me while the gunner sprays me with gunfire.
* Better stealth, I feel like it's too easy to be seen. Maybe a prone stance.
BTW multiplayer is fun. Can always get into a game quickly and they run very smooth, no technical problems at all (360 version). Kinda surprised so few people are talking about it. I can't see myself playing it long term, but it's a nice diversion. You start off a bit weak but once you level up a few times (doesn't take long, just a few games to reach level 4, after that it slows down a bit) you can upgrade one or two of your favorite classes and start to compete on an even footing. The maps are great from what i've played.