(No, I do not own a Moog Piano Bar, but an Osmose, and I just recently stumbled across the MRP, why not earlier ;-)  ...)

It would be a great extension to implement (some of the features of) the Magnetic Resonator Piano.
Here are two links
https://andrewmcpherson.org/project/mrp
https://bela.io/products/magnetic-resonator-piano/

A 88 keys and even more strings ebow/Sustaniac with ten finger and two feet control!!!

I think, most of the features could be setup with the existing physical models already implemented.
Osmose would be ideal as a controller IMHO.
The overtone-generation, vibrato, mixing "bow" and "hammered" piano would be so great.

I hope for the standard version, but that would force me to pro

Would be great to play it with the (new) Osmose (61), a Roli Seaboard, Haken Continuum, K-Board Pro 4 and maybe others MPE/PolyAftertouch controllers ...

Just for inspiration

(yes, I found the UVI Prepared Piano 2, but just sampling ... which I always avoid)
(and don't forget about the real pitch behavior "repair" when turning the inbuilt delay-time knob ...)