I assume map adoptions are usually taken by advanced forgers, I hope so. I have a semi-completed Blood Gulch remake on Sandbox. It has both bases completed, but no terrain via ghost merging. I need to send this map away to someone passionate enough to finish it. Only the bases are complete, I think this map can shine if given the opportunity. If interest is taken, post here and message me on XBL (CookieMan0).
I'm not saying that I'll adopt it (I won't, too busy), but you might get some requests if you put up some pics of the semi-completed map.
People probably want to know how your bases look, though. If they look sloppy, no one will adopt the map. But if the bases are beast, more people will take interest.