How difficult is it to add this to the game. I'm assuming that all it takes is changing 1 character which flags the current bags as "per character" rather than "account wide". Maybe another character which flags it as /claim. The graphics are already in the game. The prices might have to change. Determining what the new prices will be might be what takes the longest but not this long. It's been over 5 weeks.
From what I've seen the shop can be altered by bringing it down at any time so you don't need to wait until next patch.