[quote=Tachi]
Possibly interested, if I can think of an idea. Unfortunately, the only magical girl series I can think of that I've seen/read are Cardcaptor Sakura (and Sakura would probably be kind of difficult to play with monsters that actually need to be fought and killed) ...
[/quote]
It's true that Sakura hasn't ever needed to kill a monster, but the possibility of her fighting wouldn't be too out of the question. For example, she has the Sword Card and her elemental cards (Windy, Watery, etc) to help her fight, and cards like dash and fly could help her move out of the way of incoming attacks. The only thing I could imagine being a challenge in terms of using her for this crossover is her character. More specifically, she's never had to fight enemies the likes of what usual Magical Teams have to put up with. I think writing for her in this crossover would actually be pretty fun because it puts the character out of her element.