As an engineer your mission, should you accept it, is to build a prototype, show it works well/reliably and without lots of false alarms and then show enough folks to get their endorsements supporting you that it works. Until then you can read all the past threads here where other people have said the same things, and nobody has produced anything that has managed to get any significant number of glider pilots using it or even excited about using it.

As mentioned all those C302s out there have basic stall speed warning capability, and I believe most pilots have it turned off/set to a low speed, I suspect either from ignorance of the feature existing or because (if they find out about the feature) the annoying/false alarms.

Darryl