New Vegas's shooting mechanics work fine for an RPG where combat (and shooting in particular) shares the stage with several other game systems. It's no worse than TW3's swordplay, and because New Vegas gives you a wide variety of weapons (guns, rifles, shotguns, heavy weapons, grenades, melee, etc., some w/ physical or energy options) and the option of approaching combat scenarios in a number of different ways, in my view it comes out ahead on combat.
As for "not all that much more to do in NV quests," I'll just leave this here:
I probably said the wrong thing there. What I meant is that I rarely gave a shit about any of it because the engine is terrible, because I don't care about the characters, and because overall there is nothing but a janky mess behind the technical foundation of this game.
There are loads of connections in Skyrim as well. But guess what again? I don't care about any of those characters, whereas the Witcher 3 is actually a game that makes me care at least about some of its characters.
You might be able to make numerous decisions in Fallout, but in the end you are just climbing along on some janky and ridiculous slog. I really loved my first 20 hours of NV. As I started to open up the map, and things started to progress, I realized that this game was really low budget. 40 hours in and I didn't really want to continue.
There were almost zero set pieces worth a damn, the acting became hilariously out of touch, the writing just peculiar and weird to be weird, and I can't remember any characters anymore. Not a good sign for me anyway. I'm not saying the game is trash, but the engine it is built on takes a lot of away from what could have been.
With full mods it's worth a playthrough. But I tend to think that Fallout is just too dated for my liking. I spent a lot of hours in NV don't get me wrong. But near the last 30 I just said fuck it and quit.
It was about the time you went traveling into the snowy mountain area, which was just some mini area that seemed preposterous in scale to the map. I was expecting this huge area, and then all the stupid mutant stuff and yadda yadda. The story turned into complete trash at some point IMO. The dam and other things.... ahhh I just lost interest.
I guess the combat is okay. But it's the world immersion that just started to get to me. If you remade this game in 5 years it would probably be awesome.
It does have a great foundation theoretically, but Bethesda's engine is straight up trash.