Quote Originally Posted by ovIm View Post
makes me wonder if the pool of PVP Players is so low that Square also does that to ensure fast duty pops
It's not so low that they don't provide a separate Ranked queue, which is (meant to be) further divided by the skill level of those ranked players but in practice they all get matched together anyway due to lack of players and sometimes Ranked players give up and join the casual queue like I did.

If they are going to provide that they may as well divide it even more on the off chance it satisfies the players that want to queue as a party.