I know most people dislike modding a classic like New Vegas for the first playthrough. But some new players become underwhelmed with the poor gunplay and overall gameplay mechanics. These mods are improvements to the gameplay side of NV. Personally, I like the looks of the game. Sure, its visuals are really poor considering today’s standards, but for me, it’s part of the charm. I believe that if you overhaul the gameplay mechanics while still keeping the old school charm of the game, you could experience New Vegas in its full glory. So, here are the mods I recommend.
kNVSE Animation Plugin: kNVSE Animation Plugin at Fallout New Vegas - mods and community
FNV Clean Animations: FNV Clean Animations at Fallout New Vegas - mods and community
Dedicated Weapon Animations: Dedicated Weapon Animations (kNVSE) at Fallout New Vegas - mods and community
Combat Lag Fix: Combat Lag Fix (NVSE) at Fallout New Vegas - mods and community
JVS - Just Vanilla Sprint: JVS - Just Vanilla Sprint at Fallout New Vegas - mods and community
Unofficial Patch NVSE Plus: Unofficial Patch NVSE Plus at Fallout New Vegas - mods and community
Enhanced Bullet Impacts: Enhanced Bullet Impacts at Fallout New Vegas - mods and community
B42 Weapon Inertia: B42 Weapon Inertia at Fallout New Vegas - mods and community
Anniversary Anim Pack: Anniversary Anim Pack at Fallout New Vegas - mods and community
The Mods’ descriptions and explanations can be found in the aforementioned links.
I highly recommend watching these videos by Gopher to learn everything about modding New Vegas: Beginner's Guide to Modding FALLOUT: New Vegas (2020)#1 - Getting Started - YouTube