me too, but once i assign everyone to a location i switch them around if they're not doing well.
after you win a game you can use the cerebro energy you get to recruit the mutants you want. (each time you win a game, let it restart, press spacebar and press 'u' in the recruitment screen.)
So I finally got the Age of Apocalypse, and it was awesome. Funnily enough, I killed all the powerful characters (Apocalypse, Abyss, Holocaust) no problem. It was the damn Evil Beast that gave me so much trouble. He even managed to kill Magneto, and Clarice's reaction was sooo sad.
after it shows your score, it tells you to press the spacebar to begin another game and use the cerebro energy for a new game. the more energy you collect the more hidden characters appear. but you need to press spacebar and not close the game, because cerebro energy can't be stored.
Cassandra wasn't a problem for me: Psylocke is REALLY good at beating her up.
ARGH. I hate Onslaught, I hope he dies. Him and that Sentinel...any good strategies for beating them?
Oh, and it was a lovely surprise to find out that Apocalypse beats Wolverine in one hit. And another lovely surprise to suddenly get Franklin Richards. And then another lovely surprise to find out that Onslaught automatically beats Franklin. Argh.