i really dont understand this... I recall bioware saying that SP will be kept seperate to the multiplayer... bioware is pushing it to far if they essentially force you to play MP to change the ending(still dont know the ending mind!).
Ugh i really want to know if its important if you destroyed the base or not... i decided not to before, obviously it should have a big impact but i wonder if we could defeat the reapers without it. lol