Very novel idea, switching between bosses mid-fight and having your progress saved. I wasn't quite sure how that would help me, but I think the idea has a lot of potential. Nice job!
Thank you, and sorry you didn't quite get it. If you give it another shot, in the shift menu on the left hand side there's a button called "Assignment Information" that has some useful info in it when you hover over it regarding shifting, like what color bosses are weak to.