I'm a new game owner and added Colossus and MK after beating the game once. This is why it's great to be a PC gamer--community content! One of my few complaints about the game was only 3 X-Men in the stock PC version, so having talented folks like you add Colossus is just great.
I love that Colossus and Wolverine can do the "fastball special." (I've tried several other characters, but it seems Colossus can ONLY throw Wolverine. True?) Just that fact alone adds so much to the gaming experience. Awesome, awesome, awesome. Great work, gang.