The purpose of beta is not to “try out” ideas and get feedback (that’s what nightly is for), the purpose of beta is to find implementation bugs before they reach stable (and to find regressions).
So any of the “battle tested real world examples” you mentioned will need to happen during nightly (which is right now).
This thread is not the place to discuss that, Niko created a thread dedicated to that. Of course we’d be glad to hear more experience reports (in that thread).