Bioblock claims to push the mandible forward, also controversial. I wouldn't advise taking growth hormones as an adult, unless you like cancer (do you like cancer?). Maybe with injections so it'd be local-ish. Can the sutures reopen even or do they calcify? That would certainly be ideal for people like us, some injections and headgear for a few months and you're good. I'm guessing no one's tried it for good reason. I certainly wouldn't want to be patient 0. Neither does a guinea pig; he knows the odds but he doesn't have a choice. You do.
No link to the conversation with Dr Mew, it was on FB. He posted his email address once, I could dig it up if you want. LIPUS is low intensity pulsed ultrasound, supposed to stimulate bone growth.