I Have Draping Under My Chin 1 Year Post-op Neck & Facelift, What Should I Do?

From you pictures it does not appear that submandibular (salivary gand) ptosis (drooping) is your primary issue.  It appears that your neck remains tight in the midline but you have some drooping laterally with some concavity in the midline as well. The concavity in the midline may have been a result of removal of too much fat however you did not indicate whether or nor you had liposuction and you didn't provide your before pictures so I'm speculating.

Removal of the salivary glands would not likely fix your problem and I agree with other opinions on this board that I do no know of any ENT surgeons that would remove the submandibular glands for cosmetic reasons.

I think that you could have some improvement from a revision facelift and necklift with removal of excess skin, reinforced anchoring of the platysma (neck) muscle, and the SMAS (face muscles). Fat grafting may provide some improved contouring in the midline of the neck as well. I hope this helps.

I have reviewed your photos. I believe that you have several issues. Firstly I feel that you do not have ptotic submandibular glands, and resecting the superficial lobe would not be warranted. Secondly, you have some residual jowl fat - this can be addressed with conservative liposuction, and finally I feel that the surgeon may have been overzealous with his/ her fat resection in the subcutaneous plane of the neck and this is often very difficult to correct. I suggest that you contact your surgeon and discuss your concerns.