Wrong. A piano roll would aid a track in the pattern editor.
We already have detachable mixer view, detachable instrument editor. But. Why should it be detachable? And then again. Why not?
The pattern editor is not detachable, cause that is the core essence of Renoise. A piano roll would just be an aid to a track in the pattern editor. It’s not a replacement for the pattern editor. However @toimp have proven with his tool Simple Pianoroll, that eg. ghost notes can be a god save.
We can already show and hide different parts of Renoise. Like disk browser, instrument box, instrument properties, upper/lower frame, pattern advanced edit, pattern matrix
Why would a piano roll be any different from those? Show/Hide piano roll