Consider tagging them with the tag DVTeam . I've noticed other teams doing this and it really seems to help with cohesion. As of now, it is not a requirement. In fact, I'm going to start, but I haven't added the tag at all, yet.
And as for what counts as Designer Vintage, that matter has not yet been clarified. I would prefer to see mostly High End, there certainly is enough of it on Etsy, but High End can include designers that have fallen into obscurity----- I consider Daniel Hechter High End, for example, but many have not ever even heard of him. But what should be the limit, in terms of Lower End? Anyone have any ideas on the issue?