I really don't think we can get a satisfying conclusion to Infamous. Not because Bendis sucks or anything but because Victor's Infamous Iron man days are clearly continuing since he will be in other books. Infamous may go out on a high or mediocre note (I'd be impressed if Bendis face-plants on this one) but Victor clearly isn't going anywhere so there is less inclination to stick the landing more so than wrap up the arc.
Beyond Invincible, Bendis wont really be focusing on Victor so after this it's another writer's problem. In either case there's hope at least Doom will get another book since strangely a Doctor Doom title under Bendis can last.