The only thing that I would like to see from this game is a full screen mode, or maybe a different resolution for browser. I am playing this game with Google Chrome and when you are in the game's end screen, you can hover over the individual songs to see your times for each song. The game is small enough that the window that appears to show your score is cut off by the bottom frame of the game, so, for some of the songs that are closer to the bottom, you can not see your results.
Other than that, I have no complaints for this game. It is a fun, straight to the point game that challenges you to see how big of a Hololive fan you are.