PvPers want a gear progression path, too, which has been said for years by the high rated players. They do not want to PvP for nothing or just cosmetics. They want gladiator gear to actually be gladiator gear. Most of the high rated players hated the Legion stat templates. They told this to Blizz and eventually Blizz stopped it.
You’d have a system where there’s a lot of dead bgs, with a bunch of 45=90 minute que times. Pretty sure you don’t want to be in the que for that long for a single bg, much less if you had to wait and then end up losing.