On the spectrum analyzer, when you hover parts, it shows the frequency. It would be nice when it also shows the corresponding note of the current frequency. Good for sample tuning, when you move the mouse to the fundamentals of a sample to get the tuning.
Similar like in Voxengo span.
Has been suggested here (apparently, the melda equalizer has this feature too)
https://forum.renoise.com/t/done-b6-add-notes-to-the-frequencies-in-the-spectrum-panel/40752
+1, would definitely like this.