My ideas for making this game better:
1) Bring all buildings back so mappers have more choise which buildings they want in the map
2) Bring back Side-arms back and reduce it's power. It is nice people can choose which weapons they want
3) New purchable items like a placable Gun Emplacements
4) Weapon Drop (with pick-up system of Black Dawn so you don't have a HUUUUGE arsenal of weapons)
5) Return extra Characters (Locke, Kane, Tiberium Mutants, Petrova, Mauce, Chef, Logan)
6) Return extra vehicles (Pick-up truck, Chameleon)
7) Return the different suits/outfits for 1000 credit characters (Havoc, Sydney, Mobius, Sakura, Raveshaw, Mendoza)
8) Maybe RxD Maps