Well, I'm not a huge fan of Fallout 3 or 4, for that matter, I loved first two parts, for their black humor and weird characters, something that's been lost with 3D fallouts
But 4, despite having uninteresting story and not-so-great characters, is fun in other ways, like building settlements for your fraction, exploring is always interesting in post-apocalyptic world, but it's not even close to New Vegas quality (which was done by folks that worked on original fallout). Brotherhood of steel makes a comeback in style, one of the first thing you get is power armor, something you had to bleed for in previous installments. It can be upgraded, modded, together with weapons and other armor.
Map is unusually small and it seems to me that this is the smallest Fallout ever. Bottom line, I'm still playing it and, despite those 'flaws' I mentioned, I'm having fun with it.
There is something in traversing wasteland while listening 'In the Hall of Mountain King' on your radio...
