It is so weird that they'd do a follow up but waste 3 episodes. Okay I accept the PBxMarcy episode cause they were always pretty big players in the show. I'm assuming these are still only 10 minutes which really feels like a blip on the radar. Maybe it is fishing for a follow up, but at this point I really would only care about a more satisfying end for Finn and Jake.
If they just want to make a wacky anthology series then make a new series to do that, they already bled the world pretty dry making everything mundane and gay.