Heh.... Game balance is for wussies, thats why I do not play the battlefield series anymore. Flyingdebris had the perfect example of this. Nothing like hitting a infantry soldier with a 30mm chain gun or 120mm tank round and they shrug it off.
As pointed out before it's not something that is an effective "weapon" in the game and the Devs are not considering it because the game is really about Mechs, Areotechs, and Armored vehicles.
Historically that is not allways true but this is a video game.
However I will point out a few good things about Infantry.
The infantry soldier will be around for all times, as long as man is present in the universe there will be infantry (and if man is not present allien infantry will be around). The reason for this is that that you have to hold ground and clean out all the places a mech, tank, aircraft and or ship (space ship) could not go.
But the mod has its version of infantry which is battle armor. It will be interesting to see how it all meshes togather.
I'm just wondering how without base defenses how is one unit able to keep the other from camping all the vehicle spawns?