Before I go onto my actual point, can I be that guy and point out that in New Vegas fission batteries and glue did have crafting uses (being able to be turned into energy cells and weapon repair kits respectively)? Sorry.
Right, back on point - I liked the weapon/armour crafting in Fallout 4, and I actually really liked the settlement building, but it threw up a rather annoying quirk that I didn't like - it made me hate settlers. Seriously, raiders (the 'scourge' of the wasteland) were a proactive bunch, building walls, guard posts, setting up defenses and actually working to make sure that their little corner of the world could survive on its own. Settlers (the 'future' of the wasteland) were a bunch of work-shy assholes content to sleep on a scrap of cardboard out in the open without lifting so much as a finger to help themselves. Now I know why they did this, it was so that the player always had well built fortresses to assault and potential homesteads to construct, and from a game mechanics point of view it makes perfect sense, but from a roleplaying point of view it just didn't hold water. I swiftly began to develop a kind of twitch whenever I would arrive at a settlement and be told "Oh, we don't have enough food!" or similar. I would think to myself "I've built you a house, I've built you generators, defense turrets, beds, water purifiers, provided you with fertile tracts of land in the middle of a radioactive fucking wasteland and saved your bestie from raiders. While I was out doing all of that is it too much to ask that you plant enough crops to feed your damn selves?!?". This was all very manageable when you only had a half-dozen or so settlements, but towards the end-game when nearly every settlement site was a small town in its own right tending to all the needs of every settler swiftly became an all-consuming chore. I think if they were to keep settlement building in a future Fallout I would like to see some attempt made at small scale automation where settlers could take care of the minor stuff themselves and leave you to handle the bigger tasks - perhaps a Charisma perk that allowed you to promote a settler to the rank of mayor so that you weren't constantly being hounded with endless requests for trivial shit.