> I made files for E53 and E72 using Helmholtz-Ellis notation with SMuFL > names and the Bravura font. It would seem to suffice to change the > names and the tuning. I'll send you them separately.
This nearly does the job. Both the E53 and E72 examples you sent render flawlessly. I ran a simple string replacement in sagji.ly (attached) based on your idea, and about 75% of the Sagittal characters render now. The replacement is based on the Sagittal SMuFL character map at https://sagittal.org/Sagittal-SMuFL-Map.ods Some of the note names in the character map above don't exactly match with the names used for the accidentals in the original sagji.ly file. I'm working on a script to fix this and will post it when I finish.