Perhaps the quartermasters remain essential due to upcoming DLC?
What do you think?

I think you are refering to the Legates or Stormcloak generals.

It is possible, or it is an oversight.

I am, apologies. Early for me.
Would you like a civil war extension? Seeing the consequences of your actions?

I doubt the Legates has anything to do with Hearthfire.. My guess is that its just a major oversight.. If not then thousands of PC people are screwed ( Mod: Kill them generals ) ..

As for the extended Civil war, yup pretty much! I wish they didnt cut off so much for their release date..

The Civil War questline was intended to be longer, and have many more varied quests - likely involving the various camps across Skyrim. Unfortunately due to time constraints, they were cut.

Civil war continuation? Not really. I'd rather have something else personally. Being able to kill those unkillables in the remaining camps? Absolutely. I avoid those places like the plague for the sole reason that I can't kill them.

I got a mod that makes them not essential. I still don't know why beth decided to make them essential though...