The devs (balance team) seem to be in constant debate over reserved slots and how they can allow 10v8 games. Judging by how the balance team is reacting to the communities witch hunt of reserved slots and how the most vocal anti reserved slot players are on the balance team i don't expect them to be allowed forever nor are they popular (with the community) at all (but idk how else the server could generate revenue). Having a fast queue from spec slots to player slots is popular at this time and the community wont boycott servers that do that.