You should move the combo part to show above the note scrolling track so I can actually see it while I’m playing the game. There’s no way I can look over to the right side of the screen when I have to focus on the notes coming at me.
You should also add some sort of feedback text for when you hit a note like “Perfect”, “Good”, or “Bad” so players can get some sort of idea how well they’re doing. Maybe even “Early” or “Late” depending on what type of information you want to give.
Also, it’d be cool if you could put in functionality for splicing multiple audios together. I know that the audio upload limit has been increased to like 6 minutes now or something, but there are a lot of legacy sounds that are split into like 3 parts, and it’d be cool if your game could support them. Ideally, you’d be able to list different audio IDs and time positions to use from each audio and they would all be put together and treated as one single song.