Originally Posted by
Archwizard
Unlikely. The devs have previously voiced their disdain towards adding DoT effects, partly because players find them tedious or confusing, partly because enemies can only hold so many debuffs at one time, and implicitly because multiple ticking damage sources are more resource intensive. It's probably not a coincidence that DoTs were removed from SMN and NIN the same expansion we got Death's Design and Eukrasian Dosis, or that PLD's new DoT is exclusive with its old one.
Besides, even BRD can't multi-DoT. With the losses of Bane, Aero III and Miasma II, the only jobs that can right now are BLM and (bit ironically) PLD.