The map has gone through quite a bit of playtesting and everyone's seemed to like it. It's been updated since then, but nothing major, so I don't think another playtest is necassary. I think it's safe to say it's ready to leave the wallmask stage.
I've (barely) touched the art, nothing huge has been done. If you're willing to do the art, you can either:
a) Continue where I left off (I would PM you the theme, and even a little backstory I thought up about the whole thing), or,
b) Start from scratch.
I'll PM you the wm and bg tomorrow, when I'm not on my 3DS.
(Also, by barely, I literally mean that I covered about 5% of the surface area.)