Suggestion: Rapid method of transferring inventory between characters

Dear SE:

I recently completed setting up a new mule (Full expansions of the mule's Gobbliebag/Sack/Satchel/Storage, with Safe/Locker expansions in progress). However, when it came time to re-organize and transfer over the existing inventories of my existing characters (several hundred items), it took several hours of tedious work!

While many players use mule characters as one way to relieve an inventory crunch, moving items among them is very slow. Eight items at a time, with a mandatory 30 seconds pause preceding each logout (either that, or spend a similar amount of time running back-and-forth between the moghouse and delivery NPC) -- extremely annoying to do. Please consider adding a method for faster bulk transfers of items between characters on a single account?

How about an account-tradable EX item, that can be requested from the moogle. Sending it to another character allows that character access to moghouse inventories (Mog Safe, Mog Storage, etc) by trading it to the NPC that lets you enter PT members' moghouses currently. You won't be able to access your own mog house storage (like visiting another's MH), only the mule's (or main's) MH.