I'm not fond of keeping spins around when we're focusing on products.
That gives the message that they are second-class citizens in Fedora.
In my view, this not supposed to be a discussion about numbering classes / keeping score.
Rather, I view spins and products as _substantially_ different: spins are more or less focused on providing upstream software (perhaps with fixed bugs, or with good curation); products are much more focused on doing extra new work to integrate, work that doesn't have any non-Fedora upstream. So, saying that every spin is/should be a product-in-making doesn't match with the way I think about this.
Note that this distinction does not automatically imply anything as to visibility, promotion, or being release blocking: We could easily promote a specific spin _more_ than a specific product (say, promote Fedora Audio Product, Fedora Rails 4 spin, Fedora Cloud Product, Fedora KDE spin, Fedora Desktop, Fedora Server - the order is obviously nonsense but you get the idea).