Favorites Utility Suggestion (in General)

Currently if you tell the program to choose all the opponents you have recently defeated it will pull opponents that took 2 or more battles to defeat. Why not add a filter that tells the program to just select those opponents that you defeated in one battle, and exclude the others. That would be very useful and speed up the process of tuning your favorites list.

I think it would make more sense to have a "remove opponents who have recently defeated me" function. However, I'm not sure how much I'd use it.