Making bags, alters, banks etc all exclusive open and closing the previous ones is a dreadful dreadful solution.
It makes DDO's inventory management worse than it already is.
This is not an improvement to the game.
A degradation of my user interface experience is the worse way to alter the game.
Fix the dupe exploits a better way. Look at implementing ACID principals in DB management into your UI management. Really it's not that hard.