I don't know how to feel about this... on one side, every single character arc on this show seems to be done, or at least the writers are done with them. At this point, most of the cast are just dead weight who appear for a few scenes per episode to remind us of their existence. So in that sense, I'd be happy to finally drop some of them and move on.
But on the other hand, if it is the end, then they shouldn't waste it on trying to make some kind of spin-off. Just give the main characters whatever endings you have in mind for them and be done with it.
I think the main problem is that season 6 has had zero direction thus far, and whilst that was sort of passable in seasons 3-5("the adventure years"), it's a big issue now because the characters are why we stayed for so long. I fear that if the show ends now with them, we'll remember them at their worst.