Great idea, wish it helped. I've done tried this out but the Surface Dock (version 1) speakers (when looking at Device Manager) and audio devices (when looking at Manage Audio Devices) continue disappearing / reappearing. Currently about every 30 - 60 seconds. Reboots help for awhile, but this behaviour continues to reoccur. It's worse after coming out of standby.
Time for a replacement Surface Dock.