Client Vault-like Functionality?

Is there a way to copy digital images purchased by a client (over time via multiple orders) into a private gallery/vault?  In other words, I want to charge clients a subscription type fee to host a private gallery for them of images they've purchased.  Ideally, I'd like for new purchases to automatically go there.  Essentially, I want "My Downloads" under their account to be a publicly accessible gallery that I can assign other users permission to view.  For instance, a husband, wife, and kids -- if any of them purchase digitals, then they all go to this private "family gallery".  

There is not a way to accomplish that at this time.