I think we can use stackable runes only on non-PvP servers and share the weight of 'BP's between runes.
or
Maybe use the same system as mana potions: you click on the pedestal and refill all your mana potions (in this case, all your Runes)
Personally, I prefer stackable runes. It doesn't make sense to have to discard most of your empty bp's every time you need to refill, but still have to save some to replenish your supply....this has nothing to do with good gameplay, it's just terrible inventory management that was acceptable 25 years ago.