This may fall under my request for some HPTuners 'skins', but a good dark screen setup option would be very nice. I doubt I'm the only one who logs late at night to try and disturb the peace as little as possible, and the glaring white of the scanner interface can make adjusting your eyes tough...and I'm not even presbyopic yet. I'm sure this is a bigger issue for the middle-aged guys.
Not a huge deal, but something that would help tweak this software even further.