For me its having a single instance that indexes all the communites to which all other instances can then pull that information from so when I go searching for communities the I’ll have access to every single one with needing to post the entire URL in the search bar
A small quality of life thing, but some way to mark notifications as ‘read’ automatically, either when i click through to view it in the thread or when i vote on it. Maybe I’ve missed a setting somewhere, but when someone replies and I go to read/interact, the notification number stays there until I manually go and click ‘read’