You could still do things like in Sonic 3D's Volcano Valley, which I'm honestly surprised no one's ever tried
This? http://www.youtube.com/watch?v=8umJMy2Eh2g&feature=player_detailpage#t=155s
If I remember correctly, Magma Core Zone and The Emerald Isles use such a kind of elevator.
but I'd still like a flag that would make it wait a bit before falling back down.
We could have three hypothesis:
- wait an amount of time and then go back: not desirable, because the player can't guess the time length beforehand.
- go back when the player leaves the sector where the FOF is: desirable, because it's a guessable behavior; other FOFs and triggers are activated when the player leaves or enter a sector.
- never go back: desirable as extra option, then we have an elevator that works like Lava Reef Zone's elevator; but it could break a co-op map if badly implemented.