Gametype Layers
the main benefit would be in switching game modes. You make the main layer of the level, and the rest of the stuff is conditional and only appears if that gametype is being played. So if you make a level called EXAMPLE with 10 gametypes..
You place EXAMPLE in the level folder once. And it appears in core, in bitmatch, in every gametype from the drop down play levels list when you're playing a game.
Only hole from a players perspective I see is
Q: how does he select EXAMPLE from the all levels list?
A: Whatever makes sense to everyone
viewtopic.php?f=33&p=21002#p21002