I made a post a few days ago with the same question. And yes ofcourse there wasnt an answer.
So i saw this title, and thought to get an answer, unfortunally
I feel only be able to queue with 4 is highly demotivating for my guildmembers. Specially when we're on with 5-7 ppls, where we have to queue in 2 groups.
It's kinda odd that you need at least 8m for an op, and when you wanna play a WZ after that, you have to split the group in 2 (worse if 1 -3 players stop playing, and you have 4-7 ppls to define in 2 groups)
Specially if you wanna win WZs, you will need a full premade, so ussually 4 of us go to WZ, the 1 or 2 left ussually going to do something else, or/and log of cause of boringness