I have 237 potions and I have a good number of guildies with even more. Gree can you give these purpose. The long quest event was cool and i used a lot during that, but that was the only event of its kind.

Original Suggestion;
1) Make them usable during fights (regular play, Epic bosses, arena, wars). they are a consumable that could add a little more strategy.
2) Let them be used as currency to hire extra friends once you used up your 10/10.