Can we please have a way to sell Key Souls?

I don't even care if it's not for a lot of gold, as it'll beat throwing away gold redeeming them and not using them.

I have over 300 LoL dungeon key souls currently (that's 4 stacks). In total I have 21 stacks of keys, which takes up a significant portion of the space for souls in my book Of Souls. I am NEVER going to get through all of them, particularly where I have duplicate piles.

I want to be able to sell off my excess stacks without having to lose gold on redeeming them all. Is that so hard?

Another option might be to make Key Souls completely separate (and unlimited) so that I simply don't have to worry about them filling up my Book of Souls.