Hi swoopie :) Thanks very much! Also thanks for the suggestions~ I kind of like having the non instrument things as fun little bonuses, so I don't know if I'd want to attach them to the gameplay too much. But if you have any other feedback or suggestions please let me know. (There's also a discord, with a feedback channel if that's more convenient: https://discord.gg/7acATbT )
If you're interested in what the next steps for the game are you can see the list at the end of this blog post. Also you might have seen this already but you can sign up to be a playtester to have a chance to see the new levels early: here.