I have also suggested this feature in the notation pre-release thread, long ago, and I hope it will be implemented.
I don't think that it would be too difficult to adapt the code of the piano roll CC lanes to the notation view: In continuous view, the notation editor is pretty similar to the piano roll, so CC lanes can be displayed in the same way at the bottom of the editor. The main difference would be that the spacing of CC events would not be regular, since the notation view has bar lines and "proportional spacing" options.
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