Let Group Owner View Member Login Activity
As a group owner, I'd like to be able to see member login analytics including the last date/time that a member logged in.
I would also add the most pressing issue if mine...how long did they login (did they login just long enough to hit the like button or was it long enough to read the posts). If I knew people were reading but not Liking...that is one story. If they are Liking but not reading...that is another.