Gun Customization

I love the gun and armor system. In previous fallouts, it would get to a point where you have all guns and seen them all. it got boring. Now not only can you make guns totally different, i.e. a pistol can become all the way to a sniper if you want, but you can come back to older weaker guns and beef them up as you get perks. I just started using a 10mm pistol again because I got gun nut up to lvl3 and science up to 2, so now a kind of useless weapon has become a go to gun again. nothing like seeing the damage on a weapon go from 10 to 32 after a few mods.
That also leads me into how much I love the new leveling system. They finally got it right this time. In previous fallouts, leveling up didn't really mean much. A stat boost that was automatically applied, and a perk hear and there that was more for fun, but not much thought into it. Now you can actually "build" a character and tune him/her to your play style. Hopefully there is some kind of chem later in the game that resets all your points so you can re distribute them. Most RPG's are putting this in there games now a days