frank flame
neat idea, players can create custom charts on the songs that are ALREADY available in the minigame, and said charts can be shared through some sort of id in the server for people to try out, as well as save the charts if they like them (with a limit of maybe 30 at most, since i'm assuming more and more songs will be added to the minigame)
although this implies creating a charting system from scratch, i think custom charts could make the minigame more interesting, as well as more challenging
besides that, i think more settings such as scroll speed should be a thing, maybe note skins as well (? not too heavily sure on this one, just a preference), and a different scrolling style for people who may not be able to read the notes properly
(personally, i can't really read the notes properly unless i know the song REALLY well and i can just follow the beat/rhythm, hence the idea of adding scroll speed so people can be able to sightread easier if theyre trying a song for the first time)
solar vale
elfin jetty