Inclusion of Wheel Chair athletes would be awesome and open up Zwift to a whole new group of participants and families.
Definitely worthy of a post in feature requests Mike. 
Interesting idea. How would you see it working?
you could probably wire up two kinetic rock and rolls to the back wheels
Somewhere there was request for handbike, so it would be the point
Wheel chair athletes have rollers already, Zwift would need to do the math and add those brands to the list. Probably some road dynamics would need to be adjusted for things rolling resistance and weight and aerodynamics.