Thanks, this is a great improvement.
In terms of consistency, I have found it strange that the /my/messages group inboxes are labelled with the groupname rather than the group full name. The groupname has hyphens and underscores…
(and somewhat confusingly are auto-capitalised at the start, so e.g. patently-beta-test groupname becomes Patently-beta-test)
Whereas the group full names would be clearer and display better…
Would it not be more consistent to use the group full names here too?