The Admin CP now has usergroup tools like List User Groups and User Group Promotions built-in. It would be helpful if in the List User Groups table, some extra columns of tools be made available, such as Members, Members Current Online, Members Online in the Past 24 hours, Most Active Forums in the Past 24 hours and etc., these I all meant per usergroup data. It would provide invaluable information to forum admins in regards of the activities of their sites, especially for the sites with tens, hundreds or even more usergroups. There must be a lot other useages of usergroups could be built-in(mass change usergroups, merge usergroups, email usergroups etc.).
I'd also like to see under the Users > List All Users, add in another column to list each user's current usergroupnames, so you can easily see the big picture about the users membership.