This title really tries to move away from previous 3D Mario games and it succeds, giving the player a sense of adventure and exploration when looking for hidden purple coins and moons through the different scenarios.
One of the concerns I have is the large number of moons. Because there aren't that many kingdoms, each of them will have at most 90~ moons, and several of those will be of same nature in each kindom (find Captain Toad, win twice the Koopa race, catch a bunny, etc). This kinda kills the fun of getting some moons, because you're doing the same thing over and over to get them. This isn't an issue when first beating the game, but it really is in the postgame and specially if you're trying to get all 880 moons. Also, getting the final moons of each kingdom feels really tedious and a guide will be needed for sure.
Overall, a great Mario 3D game both different and appealing to nostalgia (especially to those who played Mario 64), but I wished it was more fun to beat 100% like previous games.