Some of us who have been playing for a while are reaching the point where we have maxed commons (or rares maybe) and even on teams we just aren't getting rid of the cards.

My proposals would be Wendy doing a Recycling Shop or Kyle in a GameStop sort of thing. Basically, we can trade in X cards to get a new pack or maybe a rare for X commons of the same character (or random). Some other way to get rid of our duplicates.