So I plowed through the Fallout 4 DLC - I have to say, it adds quit a bit to the game and I mostly enjoyed it.
Far Harbor is the most substantive and prettiest, which takes place on a mist-soaked island. It didn't suck me in as much as many reviewers, because I just wasn't at all involved in the competing philosophies of the three groups (Children, Synths, Harbourmen) - it was okay, with a weird mine-crafty type interlude.
Automatron is shorter but quite fun, and having a robot companion is way more fun then it initially seems. Before long you have a beast of a walking-tank following you, which, aside from some pathfinding issues in corridors, can make combat a fairly tireless affair. The quest itself is quite fun and ends with a sort of rift on the Superhero genre.
Vault-Tec is basically just a bunch of quests about building vaults. There's one or two substantive bits of play in here, and a couple of interesting fights as you dig through the tunnels. It's only really interesting because it sheds some light on the machiavellian nature of the overseers. The settlement building stuff doesn't interest me.
Nuka-World is something I actually really enjoyed, aside from middling reviews. It's by far and away the most difficult, and visiting areas of the park proves quite a unique experience. The downside for most players is it forces you to be the boss of a group of raiders, but this didn't bother me because, for the most part, it all takes place in it's own microcosm. There's a part near the end where you take your activities further afield, and that seems to be the crossing the line for some, but I just did it for the gameplay really.
Ended up at lvl 50 with a whole lot of critical hit perks and weapon/armour modding perks, which has made the game quite fun. There isn't much left for me to in terms of the meat of the game, but there's tons and tons of sidequests. If I ever revisit it, that is.
In other news: Zelda has arrived! After a quick update and about 20 minutes of play I can say this: My god, do you notice the drop in resolution between playing PS4Pro and the Switch on a 4K TV.