I understand that something that would take place before or during the Infinite and Seraphim wars shouldn't be allowed, but why not after? Why the fuck is it not possible for ANYTHING TO REMOTELY HAPPEN LATER ON?!?!
Also, doesn't the home page say "We allow anything that fits into the Supreme Commander canon"? Perhaps you need to remember that YOU DON'T GET TO DECIDE WHAT IS AND ISN'T CANON. Everything is layed out by the game. Not fan shit, not alternate groups with side-stories, NOT YOU (and before you start, I don't, either).
So, by definition of whatever the fuck is going on, this is NOT a "Fanon", as you blatantly block EVERYTHING canon. This is its own separate universe, one restricted to having factions be LOW-TECH MORONS.