The version is public of the invidious instance is public in the footer anyways and for the instance list it would be nice if every instance shows its version

A Publisher might provide information on a dedicate page, for example: https://www.laplage.fr/catalogue/la-pollution-cachee-des-choses/

The page often lists the ISBN, number of pages, dimensions and maybe other information and related editions.

I think that, as a first-hand source, this would be a useful information to have on an edition.