Is there a hands down, all in one replacer for animations for NV? I know there are hitmans mods but it seems like those have multiple parts, as well as only being 1st person and there's always new versions, but is there one mod that is new idle, walking, running, and weapon animations all in one, 1st and 3rd person?

I don't believe so, Hitman overhauls a lot of the first person animation, WAR does some good stuff with third person as well, don't think there's an all in one package though. The mods themselves are easy to install separately, although WAR does seem to cause some problems with certain modded weapons if used with hitman's mod(That could just be me though).

@gav07Gaming Dis fine individual shall maketh it in the near future, so thy can enjoy it: https://www.gunetwork.org/t13116-fnv-wip-asurah-reanimation-pack

In the meantime, the answer is niet.

Currently, its WAR because its compatible with most weapons on the nexus. If Decer gets his stuff release tho, it could be a game changer.

For now, use Hitman's animations along with some of ShinyHaxor's animations as Asurah's animations aren't for the public yet so after that get's released. I highly recommend it.