It is, but their hyperdrives can't reach it unless super-powered. So it would have to be some kind of major twist....

that's how Stargate works. 'this is the strongest enemy ever' 'oh, wait, no, they are..' etc XD I'm sure they can pull something out the hat to fit where they left it off.

True, but if they do it too much it will kinda ruin it. They have flexibility, but only to a point.