SE probably needs to separate cutscenes a bit more. Like, if there is a long cutscene upon entry to a dungeon, why not send us to the dungeon entrance to watch that cutscene before we queue up? That way, people can take as long as they wish because they're not in the dungeon. Obviously, exit cutscenes can be as long as needed. Cutscenes within the dungeon may need to be kept short, but I think just being able to watch the entry cutscene before you enter would go a long way.