Like in a physical store, it could be useful in some cases to have a PDF catalog of your web store, free and available for everyone to download.
An example could be a wholesaler who wants to buy from you, but they will have different prices, so they need a specific catalog. Another example could be people who want to download the catalog, read it at home, and then buy, or to show it to a friend. It could be useful in many cases.
With Product Vendors 2.0 being released a while ago, the developers added many new features, including the vendor registration form which you requested so many times.
By using the shortcode [wcpv_registration] in a page, the user will see a form to register an account and a vendor account, if not logged in, or only the fields to register the vendor account if they are already logged in.
The form anyway, could not be enough for someone. You may want to add more fields to the vendor, like their social profiles. Like always, there’s a way, with some custom code, to do it.