So after watching snippets of leaked footage (some have beaten the game already but I won't spoil you the ending) I can safely say that the new Mario game can be described as lazy in many regards.
1. Some kingdoms look flat, empty and simplistic. It seems like Nintendo showed only their best kingdoms to the public because the game has a kingdom that is only one color (stage and background) + some clouds to jump on. A heavy downgrade in comparision to Galaxy which was incredibly detailed.
2. The leves are smaller than expected. Particullary the stage with the dinosaur is very small and defeats the purpose of this beast because you're going to use it for less than a minute. There's a kingdom that has 0 interactivity and you can beat it in a couple of minutes.
3. (This is going to be an important reason why some critics may give it a lower score). THE GAME IS SHORT. By my estimates you can beat this game in less than 8 hours (8 hours is probably going to be the avarage) another letdown in comparision to Galaxy that was 20 hours long on average.
No doubt that the game will probably have 95+ on meta but I can see it receive more criticism after the hype dies down.