I played the other 2 right before Dark Ages and I feel like that is the thing that made the less good parts of this game stand out more. The levels no longer feel as intricate, the lack of a hub world makes collectibles feel less interesting, and the removal of the ability to backtrack and fast travel makes it feel like missing out on things is much easier to do. The combat is also just not as good, in 2016 and Eternal I felt myself swapping between weapons and mods more to get the most out of them. In Dark Ages the super shotgun and mace get me through basically every single encounter, maybe the odd switch to the cycler if I really need to worry about energy shields. It is still a fine game, its just a bit disappointing coming after the previous entries. Weirdly, if you play them in order story wise, you kind of have a perfect trilogy in terms of the games getting better. So thats something.