blizzards queue system sucks. I was online with WPA last night, we had 10 people on each in two groups of 5 queueing for wsg against each other using the wargames menu. The queue would pop, but clicking enter battle would do nothing.
blizz makes like a trillion dollars a month, there is no reason that wargames and BG queues should be bugged and shitty for months without a fix.
if you're wondering why there hasn't been a premade in a while, it's because people have quit this sorry excuse for a game.