Hi Jacob! Sorry it took me forever to get back to this but I was knee-deep in PyUAVCAN. I think trying to revive the old GUI Tool would not be the best use of our resources. Instead, I recommend refocusing on Yukon, which has been relatively forgotten for the past few months but it seems to be accelerating again:
If there is any chance to secure a bit of engineering help from your side, we could drive Yukon to a minimally-usable state in a relatively short amount of time. Do you think you or any of your colleagues who are experienced with Python could join?