While I do agree that other metagames would spice up interest for PvP, unfortunately our community does not have the size to support it. What this means is, contrary to what @Pinkorabane is hoping for, we do foresee the queue being inactive after the "New Toy Syndrome" has worn off. As also mentioned, our 3 current PvP queues, Ranked, Normal, and Unranked already have their own struggles being active consistently throughout all ratings, or at all, in the case of Unranked.
With the addition of the PvP Event Organizer role, however, there are definitely roads to special events hosting these metagames as a one-off tournament or a recurring event. As mentioned by Walross in the Top 25 Chat in Discord previously, a special PvP Chest is in the works that will be specifically designed for tournaments. Please be patient for any future announcements regarding these events.