Since "Slaughter" became a thing and PVP got a Roulette, I've only been able to do 3 matches as the wait time is ENORMOUS. I always go as a WHM or PLD, too, and I'd see an FC member whom PVP's as much as I do/did land in matches more rapidly despite us both being Flames and her always going as a PLD or NIN.

It's very strange who the roulette for PVP just doesn't seem to work at all. It's honestly better just to use the duty finder on them regularly!