A lot of mentors getting dungeons or trials for roulette seem to be leaving as soon as they pop in because they want a guildhest, leaving a lot of newer players stranded. Seems like it happens with the healer and tank ones most often, leaving DPS alone in instances.

Is there some sort of additional punishment than the 30 minutes? It's really disrespectful to the people who are queuing for these only to end up in an empty instance.