I wish there was an option to just queue as whatever class/role is needed. Sure, there's a "We need tanks" notice on each DF roulette, but in general I think having an option to be automatically assigned whatever is needed could make queues go faster, especially for those who only have healer/DPS. Especially if you want to queue as a party, but happen to pick the wrong combination of roles so get left out longer when you could have just been switched to the necessary roles.