Network/internet speedtest.
Would be nice to have a speedtest function. Instead of logging into machine and navigating to website like speedtest.net and running test. Possibly even a local network speedtest. This would help diagnosing slowness issues.
I have this in my Shared Toolbox, and it works well.
http://nirsoft.net/utils/download_speed_tester.html
You could run it at command line and see results without logging in.