I'm playing hardcoe Mode, so this might be coloring my opinions on this a little, but yikes.
Whole time I'm thinking 'Oh, Pack Rat sounds right up my alley, I mean most of what I'm carrying would benefit from it, and now my ammo has weight."
But then I look to get it and whoooah, 70 in BARTER required? What, am I supposed to pick between being remotely competent in staying alive or dedicate myself to playing a trader?
Nevermind that Barter, of all things, seems about as relevant to carrying stuff as Speech or Lockpicking.
I have found Barter to be one of the most useful skills in FONV, second only to Speech. FO3, Barter was no big deal since you stopped buying anything after a while. in FONV, Barter is not just about buying stuff. I thought that was the case when I started the game so I didn't choose to improve Barter at all. By about level 6 or so, I realized that there are many dialogs that offer unique and beneficial options that you will wish you could take. Barter is also about general negotiations, and not just money. I have found it very helpful to have a Barter of 70 in this game.