Trade Up options for more items
There comes a time when certain items are virtually useless and just go into overflow - even worse when you have crystals for them that you now won't open because they're more hassle than they're worth to open.
I would like to have more options for "trading up" with items - such as has been offered previously with specific items, specifically we previously were able to buy higher tier potions for lower tier ones, and also the advanced Quest Crystals that was offered once.
I'm also looking at Arena Boost items and crystals - they're horrendous to try and sell them off since you can't sell from the stash and trying to find the right classes and durations is more tedious than it's worth for the miniscule gold you get from them.
What if we could use, say, 10 Arena Boost Crystals to buy a Greater Arena Boost Crystal?
