Despite not liking most parts of FO4 I do genuinely enjoy the character creator.
I made Carl from Aqua Teen last run.
"Friggin ghouls and supa mutants! You want summa dis!"
for me, the pinnacles of f4 that made it instantly worth the ticket regardless in no order were;
the building system is really great. mods have done it etc and it could be better but i always enjoyed tweaking a location, i really liked the idea of having the starting home town a place you rebuild. if you like protecting and taking care of npcs it's great, it's like a more hands on sims. main problem with it to me is the engine doesn't really support a lot of the wide spread shit which is what led to it having such a low vanilla limit for parts and lots of computer resource usage, and the assaults didn't really work as reliably as the should and felt more like random bandits spawning inside your town instead of coming from outside funnels.
i really liked codsworth being able to say some names, memes are funny but him saying your actual name when you get back kind of touches a certain chord. which leads into the robot creator dlc, that's one of the most fun things i've had in a fallout game, and you can very easily create some of the most op companions in a fallout/elder scrolls game, especially if you don't care about collateral damage, and even if you do, you can make boones but better. and you can customize them to be yours, make robobrains to patrol your towns, i want to say you could also use it to turn codsworth into a dual wielding fat men wmd.
all the flaws they had, i liked how you could build the minutemen from the ground up and fix their forts, patrols, etc. they honestly work similarly to how a non retard yes man ending in new vegas would functionally work, where you just refuse the factions, and instead make your own. like you go from town to town and give non retarded/evil able bodied men the means to defend themselves and create self reliance, and then make a web of people that help each other. the end is very lackluster but the idea is probably the healthiest faction across the games and the least morally grey
i really liked the fallout disney world expy. the bandit shit was retarded in execution but i really liked having a big theme park with creepy destroyed shit, fun working shit, and tons of lore you could find in cold, abandoned offices, and far harbor made an argument for synth replacement infinitely better than the base game did. the ending was much closer to manhattan v rorschach in watchmen and really helped support the institute's vision. especially in a game world with obviously psycho retards and hard morally good people. it felt a lot more like how killing house does in fnv, and f4 would have benefitted greatly if your child had approached that level of understanding and explanation and wasn't dying right out the gate