xhonzi said:

What did you do with the modified FEV? I didn't think it sounded like such a bad idea...

Kill all of the feral ghouls and supermutants whilst purifying the water? Sounds good to me! Feeling like maybe I should play Raven Rock (again!) I turned to google again to see what I was missing. If you didn't use the FEV or haven't read about it, I recommend you do the same. I'm glad I didn't do it, but I was impressed with the ramifications.

Weird hearing the guy who is proud of having a super mutant and a ghoul as a companion thinks killing all the ghouls and super mutants would be a good idea.

The first time I beat it, I kept replaying the ending while trying different things, using the modified FEV was one of the things I did. Unfortunately, at that time the only difference it could make was in the mix 'n match ending narration.

Does it actually effect the world in the DLC? I can't imagine they'd really remove all the super mutants and feral ghouls from the game. I guess I'll have to google it. Seems like I actually googled it once before, and pretty much read that there is no difference. Maybe I read a bad source.