I like this game! My only feedback is that maybe there should be an auto equip option to equip a character with the best equipment for their class, since you'll have to get new ones every time you run out of MP and it can take a while to get the right equipment on.
All in all I really like the idea of having to just ditch your adventurers and get new ones every so often when you run out of MP and need someone to use items or fight bosses, it's pretty cool and of course makes for a good TF mechanic.