For the most part, the game is great. The entire balm mechanic is garbage and without it I would have given the game 5 stars. It takes all the fun and strategy out of boss battles, just a lot of timed diving. It sucks. I hope they never use it again.
Edit:. After playing the final encounter with Arceus I'm dropping it another star. It's not a fight, it's not enjoyable, it's a practice in timed diving and it sucks. Again; Most of the game is great, everything surrounding the balms is complete trash.