http://us.blizzard.com/en-us/games/heroes/ Or at least I think it's a DOTA game. [ame=" http://www.youtube.com/watch?v=eThSo670cas"]The Game Formerly Known as "Blizzard All-Stars" - YouTube[/ame]
Blizzard has always been strict with their visual content, I don't think they'd allow people to make custom art assets for the game. They might allow people to make custom maps / game modes, though. I think that'd give them an advantage. I also think if it is not F2P it will hurt them severely. MOBAs lend themselves to…