First and foremost i would like to see some knew land. Mainly I want to see a new land with more focus on urban warfare. Huge cities so we can make some Black Hawk down like scenarios. Also you might could think about adding more features to the mission editor, and maybe even a (gasp!)...terrain editor. (Now that would be cool wouldn't it?)
Of course new weapons, are always good, and maybe a new class. Also...I don't know if you guys saw it, but a guy earlier mentioned something about adding a kneeling position. I'm all for that. Fixing the bounciness of the vehicles is a must also. AND PLEASE!! PLEASE!! PLEASE!! MAKE ANOTHER COOL MISSION THAT IS SIMILAR TO THE BATTLEFIELDS MISSION. THAT HAS BECOME MY FAVORITE MISSION NOW.