Yeah, it would be crazy involved. Too many variables and likely combinations.
As far myofascial release...me and the foam roller are now best friends (let the jokes begin
).
I would not recommend the goodmornings to learn glute and ham activation and especially glute until I was sure someone actually knew the difference between hip and lumbar flexion. I think many people without personal supervision would just be doing the exercise with lumbar flexion and not really "engaging the glutes". I would go forward with more basic glute and ham activation things and as for weight bearing stick with single leg variations and perhaps things like pull-throughs and Romanians, saving the goodmornings for a more advanced time. But I have to admit I have a big problem with the wholesale recommendation of goodmornings that seems to be the trend these days. There are just too many effective exercises that will do the job without as much risk as the GM. I agree that it could be a good movement to learn the feel of hip flexion vs. lumbar flexion but I wouldn't trust most people not to overdo the weight.