How about this:
Two diffrent pistols; one revolver with higher dmg and range but slower and a normal pistol with higher ammo cap. faster with shorter range.
A hmg that you need to depoly to be able to use at longer range or else the bullets just fly everywhere.
A rpg, that spawns in crates at the base that holds for example 3 rpg:s with one rocket each. You can then choose to either take one by replacing your pistol or carry the crate to a position anywhere on the map.
I also think there should be similar crates for ammo and medkit.
I also think that there should be more potent explosives like tnt or c4 but with a long detonation time, for ex. 5 -10 sec with some kind of indicating sound so the enemy has a chance of finding the explosive and disarming it. That could be done either with some kind of disarming kit or just by shooting it.