Loss of drain on Blm...really?!

[YanderePrincess]

the solo duties for DPS are designed not to require player sustain.

You'd think that, but (as one example) one of the RDM job quest duties pre-Vercure seemed to require it. Drain was the only thing that got me through it. Theoretically, it's possible without Drain, but the unavoidable damage in that duty was a major problem. Though, we now get a health regen buff in solo duties, so that might be enough to make up the difference there.