The Bulk of Materials used on a Vintage TT of any design are still seen typically in use on any modern Turntable.
Certain material types such as Plastics and Rubbers may have changes to the constituents to produce the compounds, but prior to their being used on TT's the use of these materials in mainstream productions extends back a few hundred years, with the earliest types being close to a 1000ish years. The Mayans had Rubber Balls used for sporting events.
Cast Metals and Alloy's have a substantial history and the use of such materials in construction as a mainstream materials is nearly 200 Years old.
Other Alloy's have developed in more recent histories.
What has changed is knowledge of these materials and mitigating measures through design that enables the optimal performance to be attained from an assembly of the materials.
A little bit of modern day knowledge married into the Olden Designs does not leave much more to be wanted as a mechanical function.
Aesthetics is a different ball game, and that is one for the individual who has to live with the design to take on for themselves.
Myself I get right into the mechanical interfaces that are never to be seen, the more I learn about the 'fit for purpose' of the design. The more I want to get on board, this is a area of workmanship that is typically never seen and is usually discussed in Microns and about Materials that remain extremely stable when Microns are present as a dimension in use.