when will another class get piercing debuff

[SpeckledBurd]

That doesn't matter, because you still want a BRD or MCH for TP/Mana regen purposes, and the fact remains that if a DRG isn't present then that BRD/MCH you need anyway will be doing significantly less damage.

That's not going to be super emphasized anymore with Goad and Mana Transfer now being in the cross roles.