I would love to see vocal options in the instruments.
I dont care if they sound like voices. A piano sound is MORE THAN ENOUGH. Certainly until you decide to add a voice synth.

Add a single instrument line. Provide the options to choose: treble clef, treble down an octave (men), and bass clef. And minimally, provide the choice to label a line as Sop, Alto, Tenor, Bass.

I arrange for a cappella groups. I used to separate the piano lines and use that, but I cannot anymore. I would love to use this program every day, but you do not support vocal parts.

You need a custom instrument option that uses piano sounds. Which we can assign a clef, key, and name.

Key point, I dont care if there is a vocal synth. I just need the labels to work! And to assign a clef.