A couple of my friends and me have been testing this theory that if you leave the raid in Tolbarad, you open a spot to another player in the queue (And don't get portaled out yourself)
We have tested in the following way;
Standing at the Graveyard in the middle, we all 5 left the raidgroup and then looked for people zoning in/ressing. We waited untill halfway through the battle so that we wouldn't test this with the amount of people who join in the start.
We have tested a total of 3 times only, because it's so damn hard/RNG to get into TolBarad.
Whenever someone zoned in within the next 30 seconds, we whispered and asked if they just got the queue. It always fit that 4-6 of them got the queue withint those 20 seconds of us leaving.
Anyway, I know this might be a theory but I have tried to test it as much as I can, and if anyone can test it further, be my guest.
I'm still trying to get people to leave the group and see if it works totally, but leaving the group also means you don't get that huge amount of honor from all the kills (unless you're aoe'ing)
You can move this thread if you want, but I hope someone will come up with another way of testing this - outnumbering the opposition can prove quite awesome (especially if your side always loses)