Put all your map ideas here. Obviously, we need a SC2 DotA. I was also thinking of a map that's similar to the Battleships board game. You have these islands with buildings on it, and you could comsat parts of the map to look for enemies, and whenever you comsat, a Nuke falls on the area. You would start out with a probe and a certain amount of minerals, and you'd build whatever buildings you want (no units, though). The probe has the comsat ability, so it's very important to keep him alive. Whoever loses all his buildings first loses. I have no idea how fun this will be, but something tells me it might be boring.
It surely need an Uberena (tma for the noobs who doesn't know about Uberena) About Dota, I think it belongs to WC3, not SC2.. Think of it.. No heroes, no experience, no levels, no items = no Dota.
There was this interview that said there was an option to add experience and levels in the Editor. But as for the items, you got me there.
http://www.youtube.com/watch?v=ho_vR6gaIDA If Blizzard somehow creates lagless arrow key functions, I will definitely try to create one of these games. I've attempted to do so in WC3 but quickly lost interest after noticing the delay in reaction time.