I won’t re-state the obvious title :>
I see a slight gap in user Roles.
I believe allowing Guests to share multiple vaults would fill the gap.
As 1Password is used for estate planning, my trustees have no need for their own "personal" vault, but need various "levels" of information access.
Example, one vault would be "Home Access", another might be "Accounts". I may give one Guest access to both vaults, another Guest may have access to only one.
I believe this "tiered" approach is the solution to solving the inability to sync individual items across multiple vaults. (However, syncing items across multiple vaults would be a solution as well.)
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided