Update the "Unsubscribe on unassign" preference to include additonal options such as being unassigned due to being OOO or unassigned via a rule.
Some companies wish to leverage the unsubscribe feature for teammates when they're away for vacation or other events. When they get back, their teammate has a large amount of conversations in their Shared with me. This causes a lot of work for the teammate when they come back, and is not optimal for certain teams.
Having greater control over unsubscribing from conversations after certain events will help here.