Looking at the script from the repo you installed 6.2.4. This isn’t the most recent. I think you’d be fine to update (it’s just extracting an exe and a couple dolls to your game directory). I’ve never heard of a mod requiring an older version, so staying with the most recent is probably good practice!
I definitely recommend weapon inertia and the one that makes enemies react to getting shot (can’t remember the name, ragdoll maybe?). They’re subtle changes but make a huge difference in how the game feels!
For a long time I went down crazy modding rabbit holes for the fallout games, spending more time modding than actually playing. I finally decided to just pick a setup and stick with it so I could actually enjoy the game. I ended up following this guy’s modlist which has a nice focus on the essentials.
I definitely won’t dispute that Viva New Vegas is a gold standard, but with the number of mods that even the base setup pulls in I wouldn’t really call it minimal. I think the person who was asking (and me, the last time I played NV) just wanted a simple set of mods that did the most to improve the experience, which I think that list accomplished better than the others I’d looked at.
Apart from ENB, do you know what the other problems are? I’d guess mostly the result of it being a few years out of date, but genuinely curious!