Classic is one of those games which seems scrapped but it has a lot of potential. Fixing several minor bugs and rereleasing it on Steam would make it a decent game, appealing to regular gamers. It's a free, classic 2-team fighting 2D pixel game, what's bad about that? Also more players = more people interested to other stuff related to the game, so there's still some profit for THD. People will visit the forums, they'll donate, some of them will buy and move on to the Beta version. It's a complete game, so why not put on Steam? Anyways, just my suggestion.