Originally Posted by
Blackmist
I'd make a number of changes.
1. Be able to replace a player if they leave, but doing so invalidates the timer for ranking purposes.
2. Finishing the dungeon over the timer leaves the key at the level it is.
3. Quitting the dungeon before completing it will reduce the key level.
4. Completing a dungeon upgrades everyone's key to that level.
5. Allow a group to drop the key level while in a dungeon, so if they can't manage to kill the last boss the run isn't a complete waste.