The softlocks are a huge problem: you can press R to reset areas, I know, but this is explained far later than it should be: you can softlock yourself on the first screen if you don't know what you're doing. It isn't stated in the game that resetting rooms is possible until about 10 minutes in!
Speaking of this, balancing is really odd. Techniques are explained after the player has already done them, making it jarring as to why these tutorials were included in the first place.
The Wario's Woods influence is palpable, but little is done to really evolve on that formula other than adding overworld exploration. I would have liked to see some more unique mechanics added or maybe making overworld progression more essential to gameplay or something like that. The collapsing ceiling isn't clear enough: I think it would have made more sense to make it more apparent because I didn't even know what the yellow bar on the bottom of the screen was for until like 4 battles in. Combat also becomes stale quickly: after the third or fourth fight, they got extremely mundane and uninteresting.
Art is solid, but it doesn't make up for the gameplay not being that great. I'm sure for people who just want to look at cute characters and nice art this is a good time, but as a game it needs a lot of work.