OK..so having been cracked out on this game for at least 24 hours since I've bought it, I have found some things that this game truly needs! I will separate them between things that can probably be done in a patch and also add downloadable content suggestions. This is primarily for the PS3 but should be good enough for all platforms.

Patch:

Controller configuration-

Someone lied to you about the controls! I know your engine supports way more than this! Please, let us configure our own controls! I really doubt this is a problem on PC.

Single player / Multiiplayer nighttime effects-

All right, I know the game is post apocalyptic, but the earth should still be rotating around the sun, having a online match with the engine sounds, explosions, headlights and chaos..at night, would be badass!! Your engine is beautiful! I'm not sure if this is possible yet but it would be nice, perhaps a map pack that has the night time effects letting us toggle it before a match..which brings me to the next part:

Online game configuration-

Add the option to create a server! Either that, or add additional variables, and game plays to choose from (think quake series online types). I doubt it's possible yet with your engine, but it would also be awesome to have a online game like a 3v3 or 4v4.

Downloadable content:

More maps-

Your maps are beautifully designed!! Give us more!

More vehicle weapons. chassis, and body types-

They are excellent all ready, need some more.

My personal wishlist:

Carmageddon style racing (it's nearly there already, just need some people and / or cows to run over)

Lightning gun / Shaft

Rocket and strafe jumping (lol)

Linux client (PC)