I don’t know if there is a control software that runs on a Desktop-OS. And I don’t think, that the abstraction you try to achieve is enough as long as it is controlled via a single mouse pointer. I really like to be able to control different parameters at once with touchosc or a normal midi hardware controller.
Other software is doing this via collapsable panels and controls that can be marked to show when collapsed.
But your idea is great for hiding complexity behind a more user-friendly GUI. If that GUI could be mirrored to a mobile touch device, allowing for multi-touch, yes please! With direct communication out of VCV over LAN to the device of course.