I've heard a lot of horror stories on deleting a wizard that happened to have a mount in its bank or inventory that was important to the player. I know this is a mistake that can be fixed by emailing Mr. Lincoln, but I was thinking that it'd be more efficient if the deleted character's things went into another character's inventory/bank or the shared bank. Or, if all those are full, the gift icon on the left-hand side of the screen.
There are many solutions to this problem, but I think it's important to consider one to become a feature within the game.