I have beaten all stages on hard mode, and this is what I got to say: I really enjoy the art style this game provides, and the different interactions that occur depending on difficulty. I actually felt like I was the nervous beetle at times. :)
Though what made it much more difficult than intended is the sense that the dance moves from the bugs do not seem to match the beat, and vary between a long wind-up, and a sudden move. It would be nice if the music played after the dialogue, with the "Metronome" plants matching the tempo of the tune playing. Adding some anticipation before a key-frame move will help guide the player on which move to follow. Adding a consistent speed for each dance move will also help the player build up the muscle memory related to that move, like the spin could have a long wind-up time, while the dash is nearly instant.
I really would like to see the date mode finished, and hope that some of the difficulty is adjusted to sync with the music and "metronome" plants. It would be amazing if each character had different tempos to their songs, like chanterelle seems like a slow dancer, while ceta could at first go slow, then get more faster as she drops her celebrity facade.