I have to disagree, as facial plastic surgeon dealing reagularly with both, facial rejuvenation and chin surgey, with the plan designed for your face and neck.Thread lifts are... only threads... just it... they are a surgical fraud, no real effect overtime.I have to put into serious doubts you...
Your chin, as it is now, is a nicely proportionate and good one for you; notwithstanding it is true your chin admits a very slight anterior increase and a moderate vertical increase, by means of a two-dimensional augmentation genioplasty; this is absolutely unfeasible with accuracy and harmony...
...you are wrong about your approach and judgement regarding your chin surgery; an osseous genioplasty is the golden standard, safe, practically painless and of swift recovery.You are right about your knowledge, your goals are only feasible with a genioplasty on the chin's bone.