Once upon a time, I thought there existed math courses, particularly calculus, based on current version(s) of Mathematica®. Whether there was or not, I would like to see courses offered and written by Wolfram Inc. in specialized mathematics topics, actually written in interactive Mathematica®. You buy the course, and Mathematica® if not already owning it, then download the package or on CD, and learn at your own pace with feedback possible to experts. Charge as much as appropriate, up to the cost of a college semester.
I would think that this would encourage use of Mathematica® and be a wonderful way to learn mathematics.