*sigh*
With reasoning like this, it's no wonder companies milk their franchises for all they are worth.
Honestly: NONE OF THEM!!!
Of the mentioned series, I've only played bioshock and saints row games. Great games, but they nonetheless make it very clear their franchise is done.
-it would've been better if bioshock just stuck with just the first two games (or even the first...I've barely played the second one). Bioshock infinite was great...BUT IT WASN'T A BIOSHOCK GAME! It would've made a wonderful game on its own, but in an ironic way the whole franchise thing is dragging it down. The vigors were just there because that was what people expected, but made no sense theme-wise. Same for the story aspect where the connections to the bioshock games were pretty much shoehorned in because some twat at marketing thought the name bioshock would sell more units than a game that stood on itself (the bad thing is that that twat was most likely even right with that observation).
-saints row is another great series that went from direct GTA clone in a serious environment to basically a circus. One could argue that 4 jumped the shark, though the result is actually a very fun superhero game. I don't want more of the same for that, as I already have that (it's called saints row one through 4).
Besides..."comeback this gen"? It's not like these new consoles offers much that the previous generation couldn't handle. So it's not like you're stuck with games that feel embarrassing to play in regard to this newer generation.