yea filling the whole sheet with notes is not fun.
i think we should limit the number of notes (both total notes and per-instrument notes) to make it more dynamic.
and then spend the extra notes for some kind of upgrades later
i frankly disagree, limiting power reduces the possibility for an insanely over powered run, i think they should just add more note options like red and orange to finish off the rainbow, or make it so that you can (after filling out a line) spend half of the blocks in that row (horizontal/color) to get another column (vertical) to spend notes on, compressing the overall notes, increasing bpm.