As far as I am concerned the biggest problem is not being able to store runes in heroes or some place else. I know that you can put them in the heroes that are in the holding pen, but that is not enough. I would even settle for a compromise of being able to store runes in the Heroes in the Inn if I can bring one in to the rune temple without having to remove one from the formation holding pen. The best solution is to put all the heroes back in the rune temple like they had in Beta.