The level system I mentioned yesterday only applies to "hero" characters. You get to use about 3 of these at any time, they are the guys who can also carry inventory and use special items like strength rings or healing potions. They end up for the most part just being exceptionally strong fighters in multiplayer games, but its easy to imagine the single player campaigns taking advantage of this system as you customize your heroes.

The 4on4 matches are a real blast as there are so many things that can happen. I buffed up my human riflemen faster than anything and kept running all over the map with a troop of 15 of them taking down air attacks. I was sitting pretty surrounded by allies so didnt have to worry too much about ground attacks.