I wasn't very hyped for this game at first. And then I was really hyped when I watched some more videos. But now a while later I'm not very hyped anymore, because I realised that the actual gameplay they have shown doesn't seem like much fun (in the long run). The game seems very slow, I have seen no type of enemies at all and there is almost no competition between the players (I love coop, but since there seem to be no actual threat in the levels to eliminate, what's the fun?). The thing that seems the most fun about it is creating the levels, not playing them.
If they actually have alot of stuff they haven't shown yet, it could still come out great though.