Just played some of the prologue from Wolfenstein II: The New Colossus. I like that they had you start the game taking out Nazis while sitting in a wheelchair 
It's probably too early to judge, but I got to the part where BJ surrenders to Engel and my immediate kneejerk reaction is that the game's tone feels much more silly than The New Order's. Granted, TNO was already pretty silly- the game featured a fucking Nazi Moon base after all, but it treated its world and characters mostly seriously
Engel was already a ridiculously exaggerated Nazi caricature before but here she's a completely unhinged cartoon character. She was creepy and insidious in TNO but now she's just really annoying, and her weird antics kind of rob Caroline's death of its impact. Engel picks up Caroline's head and makes kissy faces with it first at BJ and then at her comically fat and inept daughter that she's constantly berating for being overweight even in the middle of this military operation, shoving the head in her crotch at one point. I'm guessing the daughter's joining the resistance and getting a redemption arc
Gonna continue the game and see how it develops later, but first impressions are a bit mixed
The impression I've always had is the first game was inspired or evoking 60s war films like The Great Escape or Where Eagles Dare.
The second game has a more campy 70s feel, as if they were inspired by "Nazisploitation" movies like She-Wolf of the SS or silly grindhouse movies. I have a feeling this was intentional on the part of the writers and designers, or it was at least a thought.
I guess it's also a question of how you follow up Nazi moon base and giant brain robots.
If the trend continues, they'll reach the 2000s and the next one will be a 140 hour campaign about how brilliant the Nazis are and how they totally should have won like in pick any History Channel show.