I'm a big fan of map editor in any context and especially here it looks like while it's not "rocket science" it has a lot of potential.
So far I haven't been able to figure out will we be able to share, play, rate etc. across platform in common environment like for example in Doom & Gunscape we can. (even there isn't actual cross-platform play)
Obviously it would have huge effect on how much content there will be if it's only your platform versus all.