Yeah....but how do you intend on encouraging people to actually participate. A dragon skeleton would be a lot of work...heck, a dragon with flesh still attached is a lot of work.
200x200 px. I had a lot of fun making this :3 It's not transparent, by the way. Hope you like it. Also, I'm posting this on my Deviantart, so don't flip out if you go there and see it.
They already have something like this here. After all Project Contests are building contests. They just haven't had one in a while. But people are still posting suggestions.
Hmm...you say that we can temporarily remove the cube for screenshots...is there a way to do that without destroying it by hand? And without worldedit?