Yes, while nothing impressive, they have a good cover for debuffs & Dazbog or alternatively Vulcan works as a nuker. I could clear it with a grid as bad as it could get for a veteran & no accessories equipped, either.
As for Kaiser, I kept around a pile of orbs as an emergency supply of HEs in case my Phoenix bow farming doesn't go well. Since I'm done, I could safely use the orbs for grabbing Nova Kaiser.