Started playing yesterday and listened to your review this morning. Just one comment: You repeatedly assumed that the main criticism people might have is the lack of an XP system. After playing for a few hours (too early to really judge, I know) I'm concerned about very different aspects:
I don't like the many time-wasting activities Nintendo likes to add recently, like filling holes with confetti, finding Toads, finding collectibles, ... Luigi's Mansion 3 has the same feel, and even Mario Odyssey does it. My interpretation is that N tries to accustom to mobile gamer's habits with their short attention span and a need for constant, instant, no-challenge rewards.
Don't like it, it doesn't feel tight anymore :/
Other than that - very tutorial-heavy, hoping that will go away later. And the ring-puzzles are not particularly fun.