The config tool would be GREATLY enhanced with a default/preferences page where you can set some common things - this has been discussed before.
One thing we would greatly love is a one click into test, instead you have to wait for the confirm screen (for options like check integrity and use data) - which we always leave - which takes a minute, you then go off and do something else, read the forum etc, come back and are still looking at the annoying confirm screen. Would be very happy to bypass this.
It's little but you do it enough, and it adds up in lost time.