I bought this at launch and my god it was bad. It wasn't a good game, never mind a mediocre Fallout game. Recently I've picked it up again and it's actually pretty damn good, not in comparison with the others in the series, but it's still a good somewhat standalone game. I would recommend this for anything sub £5, you can easily get in 15 hours before it becomes a massive grind.
It really reminds me now of the old Defiance game, crossed with Ubisofts The Division. I think it's important to play this not comparing it to the rest of the series however, and simply enjoying a game that has made massive improvements since release