Mario is made by illumination who always make sub-average movies. Complex stories are never requeriment for good rated animations, however your movie still needs some substance which can be archived by compelling characters, a well written screenplay, good direction, good art design or well done worldbulding. Certainly not the case for Illumination movies.
I'm expecting yet another lackluster movie and a pretty easy skip. Right now I'm conflicted whether I want it to flop so Illumination can finakly start to make better movies ou want it to at least pay itself hoping for movies from other games to be made