I am sure everyone has at some point been frustrated that they have some limited items they need to use on different characters for different purposes but you can't really remember what character has what and then you have to log back and forth to make sure everyone has a replacement and so forth.
Imagine the Obol "All Personal" UI but for player equipment. We open it and can freely swap gear between our characters without having to log onto all 10 to see where that one trophy or keychain with that coveted %droprate or %multikill is. That's what I am proposing, nothing more, nothing less. Just a QoL thing that already exists for a different system :)