Use regions, visuals should not dictate logic, logic should dictate visuals.
Except when visuals are shorthand for logic.
-Change terrain in game
-Hide chat text completely (might be possible but the search is still kind of on)
-Get more than 32 FPS on a trigger
-Anything that uses Local Player
-Having more than 50 buttons at once
-A map with more than 2^21 bytes of compiled script
-Decent floating point arithmetic