You're right there's no meta because dungeons are extremely forgiving, if you want to practice something new (like, say, stance switching as a tank) you should be able to do so.
If someone's level 67 they're almost at end game, where stance dancing will be expected of them, so there's nothing wrong with trying it at that point. I'd rather have someone not know how their job works in a Doma Castle run than in a Byakko EX party.
