I think this a great idea. It was in the back of my head but it hadn’t quite crystallized until you posted this.
They have the three excellent code bases, all written for similar platforms, and all worked over again to port to plugins. Put enough compute horse power behind it, with multi-timbrality, and a polished physical interface and you’ve really got something. And that eases the parts shortage, if this is an issue as it seems to be.
Korg currently sells the Waldorf Iridium, Iridium Keys, and Quantum, for Waldorf in the USA. ThIs Triumvirate product would be right in the same competitive area, along with the new AKAI MPC Key 61. I think it could fit into Korg’s product line filling in an area and appealing to those for whom the Nautilus doesn’t quite fit.
And add a poly-aftertouch keyboard in with that too.
Total pie in the sky thinking here.