Yeah I should have clarified - I have plenty of generic MIDI controllers. The special sauce is reflecting the "VST" rendering/presentation of its own sliders/dials onto physical ones.
This means not having to look up and down constantly between your computer monitor and the physical hardware since the knobs/dials each have small screens/displays are 1:1 matches (so Frequency Range, Sub Audio, Clamping Point, Oscillator Frequency, etc).
VSTs are rather inscrutable and I think it would be difficult to design in an agnostic way that played nicely out-of-the box with the majority of them. Doesn't stop me from lusting over the possibility though.
I am a little confused. I think you the mean reverse of the usual mapping: (a) from the surface to the plugin GUI (b) the plugin GUI is drawn to look like the surface. Right?
Interesting idea, but creates a bit of a coding conflict: the plugin developer writes the plugin GUI (typically feeling they've lavished a lot of love on it); they're not in control of the layout of a control surface (and indeed, may have no way to know what it is). So a job that would really be the job of the control surface manufacturer can't be done because that's the domain of the plugin developer.
It's fairly easy to imagine a single control surface offering this for a tiny subset of all possible plugins, but getting beyond that seems pretty much impossible to me. There was a protocol that Digidesign/AVID bought back in the mid-oughts which did maybe 60-70% of this, in the sense that it provided negotiation between the plugin and the host/surface. Problem was, it was so complex that almost no 3rd party plugin developer or control surface developer was willing to get involved.