This was mentioned in titan leagues part of forum some where by a player and I liked the idea. I was thinking a buff that would let you steal stamina and add to yours. I think with some huge stamina banks around fs, having that kick in would be fun to watch for those with small stamina holds and for those with large. I wonder what to call it. Stamina clone and it only works by taking what your hold can hold for example. What if you manage to find 100,000 player stamina hold and you manage to get x percent of it and you only could hold 100 extra stamina. Instead of doing the whole thing it would just refill what you have open by some percent of what the other potential stamina can hold or based on what is in the stamina hold. It could go either way.
I think it would add some interesting twists and this is only temporary since buff and not potion. Epic potion would upset fs world balance.
Just a thought in global events with such a buff would be hilarious.