I don't know if anyone has posted this idea or not, but how about being able to put treasure cards into your shared bank, since you are basically able to put everything else in there, with the exception of items that say no trade. I don't mind helping a wizard who is on my friends list if he or she is going to be deleting a wizard, but don't wish to lose any of their treasure cards, but since we are now able to put our reagents into our shared banks, why not be able to do the same with our treasure cards, therefore making sure that the one with whom you traded cards with doesn't wind up using them for themselves, or even worse selling them or trading them with someone else.
Again, I'm not sure as to how many others might have made a comment about this, but if this idea is considered, I hope it can introduced in a future update.
