Not Planned [XF1] Multiuser management - assign user roles in item

Hey there,
this kind of goes hand in hand with this:
http://addons.nfljunkies.com/threads/reassign-showcase.400/

I think I noticed before, that I would love to be able to create an item and assign different roles to users, so e.g. if I use the showcase to show videos, I would assign users at artists, editor, director and a producer, while the director and producer should be able to change information of the item, too. (images and tabs).

So setting a new "owner" would just be a click to assign the owner role in the item.

That would be a pretty huge, but great feature.