Nier 2 is fun. The Yoko Taro narrative remains strong. My first two playthroughs were mostly the exact same game, but the character perspective expands the overall view immensely. The game takes full advantage of this same run with different viewpoints for some surprising moments.
The combat is the same with some minor tweaks that actually change up the character styles to mix up the mood while you Kill, Murder, and Euthanize robots. All three are aptly different, all three will happen.
The main story is short enough to play multiple times with a plethora of option side quests that will keep their current progression between runs. That said, each side quest is its own little story and things were better off without your help.
In the end, this is a Yoko Taro game. Everything you do is wrong, terrible things will be done by and to you, the only guarantee in life is suffering, and you will love every second it.