This is another factor I honestly didn't even take into account when I created this thread, and an incredibly good point. I wouldn't be surprised if queue times to run this extend quite high even for the adventurers in need (Healers, Tanks). As mentioned just above, the cutscene would mostly remain a non-issue, as there's only the one, and it's relatively short. The law bonus for first time clear given to the party should be enough to shut up all but the most time starved "hardcore" player.
