The idea, specifically for the m500(t) was to
Replace the analog meters with LCD VU meters whose colors could be adjusted, and,
the middle logo - where M500(t) + Carver is - put a simple touch control for Power On/Off. IN the case of the M500, the face plate would no longer need cutting.
I do understand @Rod H's point of view, that it will not add any new feature/function. For many of us, the physical movement to reach a piece of equipment, can also be our daily physical exercise. 🤣
The option to buy a more modern gear suggested by @dennismiller55 is good one. I use a Marantz 8802a with vintage M500t MkIIs. Many of us use modern PreProcessors with vintage amps.
@AndrewJohn Pi 3's rule. Myriad of possibilities.