I have seen gameplay from some event which relic was streaming(100% they had some top-notch rigs) and sometimes it was just slide show, it wasn't fluent even with slow action - really bad FPS.
Another faction would ruin balance even more in CoH2. I don't get why you would like to ruin this game even more.
Dude, balance does not exist. There will always be unhappy. But the new content (factions, commanders) allows attract people to the game.