While you’re coming at it from a different angle, your suggestion seems to attempt achieving very much the same already described in this existing feature suggestion. While I get your point about not syncing metadata in the first place… without that… how should Plex even know you have the same stuff on all those servers?
Probably a silly question… what’s the exact use case here and why not simply stream your media remotely from one server (avoiding all the hassle of cloning manual changes)?