I think LuxXeon completely covered it: there is some work being done on a centralised material library component of sorts, but it has been ages in the making and is still not ready for prime time. I've sort-of written a python script for painting very, very, VERY basic 'shaders' on V4, Antonia and others, but it is still quite rough and the shaders are more of a proof-of-concept thing rather than very usable of themselves. I guess I was trying to see if I could do it, but got bogged down by my day job.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks