Bluemix Log improvement

It would be nice, from an administrative point of view, to be able to tell when a user had last used the system. 

Since we have a limited number of licenses, it becomes important when I need to remove users who haven't used the system in a while to make room for those who want to use the system now. 

It would also be nice to be able to do the same for orgs and spaces so I can tell which can be cleaned up. But I suppose I could do that by searching each of the users in those org/spaces, but it would be more convenient to be able to do it by org/space. So if the user entries contained the org/space accessed it would kill two birds with one log entry.