From what I cant tell, Nintendo's "tradition" works because it's so fundamentally solid. It's the biggest case of "If it ain't broke" I can see in gaming.
Not saying they're perfect, and I'm not denying that Ghost Train Rides, MMOs, FPS', Battle Royales and especially the Souls trends don't have merit, but it's a nice comforting feeling with Nintendo specifically. It's a good constant.
That being said, Nintendo also respects the philosophies employed by their subsidiaries and second parties. It's a genuinely great system that they have. I think Nintendo would do well to follow the curve once or twice, but it isn't needed. What they do works, and they evolve as needed. That'll do me.
I agree, however I've just got a fair few issues with those "Third-person cinematic narrative-driven action-adventure games" that they keep making. I just think innovating on those would be for the best.
For what it's worth though, Resident Evil 4 Remake has a lot of those qualities, but it works a lot better for me because the setpieces feel meaningful, dense in number, and the moment-to-moment gameplay feels tense and horrific. I feel like that's why something like God of War 2018 didn't work for me while RE4R did.
That and Mercenaries mode is one of the best arcade-modes ever put into a game, that stuff is great.