Sliding genioplasty to open airway & improve side profile? Or deep plane? (Photo)

There are many issues that you are bringing together. If you problem is airway related and you have difficulty with sleep apnea, then you will need upper and lower jaw advancement surgery which is performed in the hospital. If you are concerned with cosmetics, then a platymaplasty and custom jaw angle implants would be a possibility. A phot with you not smiling would be helpful. I don't think you would benefit from a genioplasty.

A sliding genioplasty is usually performed by an oral surgeon when your teeth are significantly out of alignment.This is done in hospital setting under general anesthesia with an overnight stay in the hospital and is much more invasive. A small chin implant can be placed through an incision underneath your chin under local anesthesia as an outpatient procedure which takes about 30 minutes. This is done for purely cosmetic purposes and has nothing to do with your airway or the way your teeth fit together. Regarding your neck, it appears to have fat deposits located below the platysma muscle in your neck that's why you still have residual fat deposits. Liposuction can only remove the fat deposits above the muscle.A Surgical neck lift is required to remove the fat deposits below the muscle which also includes a platysma plasty to significantly improve the jawline.