Sounds great!
The biggest problem with using these motors is the placement of the electrical connectors rather close to the output shaft. You probably already have something in mind, but if the gearbox extended or redirected these connectors so that either spade lugs or screw down lugs could be used, these things could be powering hundreds of active pickups and other small tasks typically done today with a PG27.
You might also consider finding a manufacturer who would build these things for sale, giving the team a royalty. This way, teams without 3D printers could utilize the design, and you would help your team financially in future years. It's been done before, here are two examples: