What you propose is a definitely worthwhile idea, but I think its reception might depend a great deal on the age of your students. Retirement careers are probably the last thing on a young student’s mind. However, depending on how you run your school, the Vaganova Choreographic Institute and the American Ballet Theater School both seem to have the understood tenet in their program that once a student has passed the age of being able to be a good performer, they return to the school to teach. This may work in large organizations, but in smaller enterprises, the outlook should probably be wider range for post-dance careers. Writing for dance-related publications might be a possibility, and getting involved in the production of music and teaching materials or costuming might be another. Bear in mind I’m speaking from the perspective of a retired musician—never a dancer, but much interested in the production of class music for dance.
