Sadly I think it's highly likely that the androgen/AR angle , estradiol and minoxidil is pretty much as good as it will get for the coming years and there will be no "compound" whatsoever that will beat that. Androgenetic Alopecia seems to reflect a irreversible state anyway at a certain timepoint. In this situation, when damage is too severe, only the creation of new hair follicles will do.
The Brotzu lotion will do something seeing the biological activity of these compounds in that topical, but it certainly won't be better than today treatments.
Regenerative therapy and gene therapy is where I'm looking at Pray. Tsuji being our biggest hope, no doubt.