good question....

It does make you wonder if there is still a demand for this sort of ornamentation and is there anyone with the interest in developing this sort of demanding and specific skill?

Personally, I have no idea.
I suppose the best source of info might be someone like Jim Merz or Mark Bulgier, since they have a deep history with the hobby and are skilled machinists too.

It's certainly a shame that Jon Williams passed away... about 6 years ago? The 2018 Classic Rendezvous gathering did a remembrance of him, and folks brought their bikes that were fitted with parts that Jon had modified. One that stood out was Dale Brown's bike that was built by Brian Baylis. It had quite a few parts that Jon had worked on.

Here's a shot of the Campy NR derailleur that Jon had heavily modified...




Peter Weigle had included a subtle message on one of the bikes he had displayed...




Jon William's flickr pages are still being maintained, and you can see his photos of the work that he did on Dale's Baylis bike:
https://www.flickr.com/photos/546162...th/26108758731

Steve in Peoria