Planning a New Ballet Album

I am hoping to make a new album of music for ballet, and I am thinking about creating new piano pieces for recital dances. I would love to have feedback on this from ballet teachers, ballet studio owners or anyone else involved with finding music for year end recitals (or any other ballet presentations).
Perhaps the most important question is:

Would this actually be of use or interest to anybody?

Also: What is a good length for recital pieces: 3 minutes? 5 minutes? A mixture of short, medium and long selections?

Answers to these questions, or any other suggestions would be gladly accepted and considered; I’ll look forward to hearing from you. Thanks!