there should be time limits to dungeons\overwords\rooms in a dungeon like in MM where you have 3 days.
timed rooms
I'll bet you could take care of that with global scripting. There aren't that many tutorials on it out yet though, so I'd wait a bit. You'd probably also need duplicate maps so all the events can take place on their own space.
MAN, so much is possible now with scripts. 😊