They almost always say tank, yet often times for main scenario I will have 5 min+ wait for tank, then instant as dps. I often get 2 mins or so as tank in low level, then instant as healer...

How does thing work? Does it say tank just because or is there some method? Even when tanks aren't what sin demand it still only rewards them. I main a tank so its typically alright, but I feel it should reflect whats actually needed at the time, and I would gladly switch to that as I have everything geared, like the fast queues, and that helps people out more. Same happens in trial roulette.