Skavan

I can confirm this fix works, but with one caveat: You may have to set Skyrimprefs.ini READ-ONLY in order to have Skyrim NOT change this setting BACK TO 1 "for you" without asking.

I would love to see this as well. If only for the times I've come across a dead NPC and thought, "Oh no, I know her. ...Well, I'm not leaving her here..."

That link is outdated, by the way. NFF is now here. (Also, this should help when a follower is blocking YOU from passing through a doorway, but I doubt it helps much when a follower is blocking ANOTHER FOLLOWER from passing through a doorway or up/down a narrow staircase.)