If JAMF were able to collect this it would only ever be because Apple added it to the MDM spec and I can’t see them ever allowing that since it could be a huge invasion of privacy. I get that even on a supervised device it would be your institutions device but I still just would never see them opening that can of worms.

I also work for an educator and think that teachers that choose and evaluate apps to use in the classroom would value usage data. Has a feature request been submitted?

This kind of feature request would need to be submitted to Apple. @chriscollins is correct, this would have to be added to Apple's MDM Framework. You can submit this feedback to Apple via your Education Account executive or at https://www.apple.com/feedback/