i suggest, with others opinions, that there should be some new classes.
perhaps a sniper, who has longer range than anyone and is stronger but has the slowest fire rate.
sniper may be able to do a setup type thing except it cloaks too
a headshot move that makes ur next attacks deal heavy damage
critical hits maybe so that it has a duration of time where the sniper deals a peercentage of the opponents hp.
maybe a longshot where for a little bit you can see the whole map or a large portion of it and shoot from where you are to anyone.
perhaps an explosives expert, who uses a pistol
an rpg ability where he shoots a rocket with a short cooldown
a proximity mine so whoever steps on it blows up and it deals big damage and you can put as many of them down as u want.
a detonator mine that deals more than the proximity but must be detonated and youcan only have one down at a time.
a cluster bomb is thrown and rapid explosions happen in an area.
melee class, who has extremely fast movement speed and is pretty durable but has a low hit chance
a lunge that makes the char basically teleport to an enemy but ONLY to an enemy
a knockdown that makes someone stay still for a second or two
a attack speed boost
morale booster every conseciutive kill makes the unit stronger
also some new maps would be great!