I played on this. The Mechs weapons were over powered and won almost every round.
I continued playing on it though.
I know this.
When I was there, Terran won almost every round.
They were smart D:
Smarts always win.
So what I did there, I set the teams to a 3/1 ratio. For every 3 Humans, one mech, robot, whatever you want to call it was added to the opposing team. So 12 humans would make 4 mechs, and so on.
Seeing how the mechs are twice the size of the player, and has twice the health and 3 short-long range weapons, I figured that would balance it.
Edit: Also I forgot to mention that a vehicle has been added, many people said it ruins the game. As in it would be better to enter the ship through the grav lift rather then fly in the hanger. There is also a CP in the main hanger of the mini frigate, it takes about a minute to capture and if the humans capture this point they win by default. So the key of it all is outsmart/wit your opponents, ambush and strategize.
One other thing I forgot to mention, previously in V1 you spawned with weapons. In V2 you got to choose them, via classes. V3 you spawn on a random brick, that is your class for the game. I tried to implement various mechanics to make each game seem different each round.