Quote:

I can understand the F#/Gb becoming D#/Eb ...



That's the important issue. The other example is just that -> an example. Potentially emphasizing problematic early design decisions, such as not supporting notes or chords like B# (haven't seen a B# chord either up until now).

The issue is losing the functional distinction for transposing instruments. An Eb chord deprived Alto Sax player likely is an unhappy Alto Sax player ...


Martin