To elaborate on the last paragraph (which was the 2nd thing I wanted, honest!)
we currently use a "Write in code, receive bacon" thing. It tends to be buggy and stuff.
So what I'd like to see would be a way for maps to "carry over" characters from game to game,
presumably as a flag in the trigger menu to replace default "Save" option with it.
Two things I'd kill to see:
New multiplayer support, where maps can broadcast for new members to join...
...while the map is in progress.
Though the editor would also need a way to recognize new players then I assume.
This obviously isn't helpful for most maps, but it really helps for RPG maps.
...It'd be also cool if there could be a "cross-game cache," so players can simply
load content straight out rather than the current gimp-solution.