I'm currently setting up to play Monster of the Week - Interdimensional Crisis Team (from Codex of Worlds), but after that 5 session run, I think I'm going to set up a Collaborative Campaign and a Proactive game to follow, in the online community I'm in-- the Open Hearth. I prefer PbtA as a system, though, so it will most likely be Stonetop, which as I think I've said before, seems perfectly suited to a game like this. Though I've had a bit of a Science Fantasy craving of late, so will likely encourage those kind of worldbuilding elements (like the venerable Skyrealms of Jorune, or Barsoom/John Carter, etc.).