I like the idea. However, I'd make the timeline just after the 8th season, and make it Humans vs Goa'uld. Earth now has a small fleet, With that new Class of ship (and of course i can't remember the class, plus atlantis isn't on space yet) Earth starts to expand diplomatic relations to other space faring planets, plus the few that are around there tecnological lvl, in an attempt to battle the gould. With the loss of anubis, and the damage inflicted by the replicators and the jaffa rebellion, earth could stand a chance to build up. Maybe Earth would have the ancient outpost on the planet as a defenceive structure when they start out, discouraging any gould player from striking early on. Not to mention the large amount of x-302's, the promethus, and that other new battleship. If it was possible to add a 3rd species, then definatly the Asgard! Hmm but how to add the stargate system to the game. Perhaps once u control a planet, and it has a stargate, u can deploy an expedition team, and they find the gate, if not already used by the civilization on the planet. Once the stargate is set up, u can put an iris on it, and instantly send ground units to other planets. Reinfocements wouldn't be a prob. Earth would start with beta site, maybe even a couple others, like.. can't remember name of the planet, the one with naqadrina, jonas qinns home planet. Maybe i'll think of more later