To be honest, it really seems pretty simple. Calibrate and read the speed sensor, and adjust the governor pressure from there. Some logic to turn OD & LU on/off. The hard part will be the physical housing it's held in.

Ideally a board member would have access to and be willing to test it on a transmission dyno, but everything up to then can be done on paper.

I think the reason there aren't any other controller yet, is the same thing that plagues most mopar stuff: low volume.