In 1974 I laid my my greedy paws on a Lachenal Aeolian. I've never forgotten it, but the owner wouldn't sell for anything that I could offer. The buttons were spaced and sized seemingly identically to my cheap Lachenal, but the way my playing instantly improved was remarkable.
It may have been a product of the way the polished metal buttons seemed to be identically balanced, and it was like climbing out of a Mini and into a Jaguar.
I think every 'hexagon zombie' should at least try to try a high-end instrument.

I have wondered, in the past, about encasing the (roughly turned) ivory buttons on my instrument in brass tubes, or lining the button holes in the wooden end-plates with brass to act as bearings, but somehow never got around to it!