- since MIDI Note numbers only mean something in the world of MIDI, the user may suppose that the inspector shows the MIDI note number which will sound at playback; that assumption is wrong in case we deal with a transposed score.
- Since the inspector works in the score view, which is the world of notation, to lots of users ('pure' notators' )the MIDI note number is meaningless.
I think that, in the visible score, the MIDI number unambiguously corresponds to the notation one-for-one. For example, with a treble clef, the note on the first line below the staff is MIDI note 60. Always.
To your first point:
In the case where the instrument has been designated as a transposing instrument for playback, it will play back a note which is different from the "first line below the staff" and is also different from MIDI note 60. By the same amount, moreover. If the user doesn't understand that playback as a transposing instrument takes them away form the "as written" note, then they'll be in the same pickle whether they're thinking in terms of notation or in terms of MIDI numbers.
To your second point:
I still am not clear on the purpose of this elusive "inspector" (elusive because I still have not found out how to access it - and because I don't seem to feel the lack of it!). The user already knows that a note is a "Bb", for example, by looking at the notation. So what additional information are they getting from the inspector? And if they don't want to know what the MIDI number is, they don't need to look at the inspector at all. Maybe the inspector should just be eliminated?