I'm not sure what you can do "new" with open world games at this point in the industry before it simply isn't openworld anymore.
First was great, great characters, mystery, surroundings, enemy design, sci-fi mixed with old etc.
Compared that with Valhalla...100 hours in and you want to slit your wrists knowing you've got another 50 more to go. I totally agreed with Skill Up's review of it, great open world game but needed to be 30 to 50 hours tops, not the 150 plus it became. Why can't Ubisoft figure this out?