I think that the Heroes Inn was a bad idea. It makes it very hard to change formations. I understand that with the numerous heroes that some people have accumulated that having all the heroes on the Hero, formation, and Rune vault screens is also a problem. Perhaps we should be allowed to sell heroes for the same value as heroes cards and that means that we can clean up the 'hero inventory'. Then the Heroes Inn will be no longer needed and all the heroes can be in the other screens.