"Over the next few years, we'll expand the eBay catalogue in phases to eventually cover all products. You'll still be able to add any items that are not represented in the catalogue—such as unique, handmade, or vintage items."
That should be interesting. Everything I sell is unique. Even if I were to list, say, a book from 1955, with copies from other sellers out there, not all books with that title are equivalent - there's the factor of condition, whether it's signed or not, not to mention comparison with print-on-demand copies and other reprints. I won't even get into ephemera.
It sounds like I'd have to make a new catalogue entry for every item, and wait for it to be reviewed by someone who has zippo experience in my areas.
My guess is that the vintage sellers might be heading for the exit doors en masse.