Great work as always Chod! The way this is worded in parts almost sounds like you're creating this with a larger goal in mind, not simply reforming the GUI for you tools internally but almost as if you'll be offering this GUI Studio as a service for other developers to use for their cheeses. If this is the case then I'm excited as I've been picking up C++ lately and would definitely love to play with this tool.
Keep up the great work!