Regarding the rhinoplasty, my nose is far from perfect and if I cold turn the clock back I would never mess with it. My primary surgeon destroyed my birth nose, the revision has at least got me to the point where I can function without feeling like a freak. Yes, there is a columella scar, but this is actually the least of my worries. Scars generally take about two years to fully heal, they worsen and become thicker during the first couple of months, then gradually fade as the excess collagen is broken down and removed. It will fade, but it will never go away. This is an unfortunate consequence of open rhinoplasty.
Back to the HA, thanks to everyone who has contributed with their insights. I get the impression HA is generally quite risky. I'll therefore probably stick with advancement alone, and just use the HA for the step off and mentolabial fold, rather than contouring the whole jaw. Thanks!
