Currently there is no quick way of telling if a profile is defunct other than the 'Last Login Date', yet this does not distinguish between 'disused' profiles and 'no longer in use' profiles.
It would be very helpful if:
the 'Last Login' column in 'All User Profiles' was sortable
profiles were automatically labelled as 'active' by default when they are created (eg. with a tick visible to only staff/ not visible in students view of the list)
system administrators could re-label profiles as inactive (eg. removing tick) when someone resigns/retires from the organisation
a new 'Status' column and/or filter was added in 'All User Profiles', so results can be sorted/filtered as active or inactive
This would make it clear which users we need to engage with (active user not logging in), and indicate when a list has been rolled over with a resigned list owner (inactive user).