DONE in v5.93!
Since v5.32, REAPER can load custom CC lane names for the MIDI editor (yay!!).
Loading new CC names is done via the same Actions as loading new note names, and CC names can be combined with note names in a single text file.
However, the menu items and Action names have not been updated yet, and still only refer to "note names" - which is unhelpful for someone trying to figure out how to rename CC lanes. For example, the menu still reads File -> Note names -> Load/Save/Clear note names.
Could all these menu items and Action names be renamed to "note/CC names"?
BTW, there is a little glitch: As pointed out in
another thread, if a CC lane is already visible, its name does not update immediately after loading the file. The user first has to click on the name dropdown list.