Is it possible to use fat to actually cover platysma bands on upper neck?

During neck lift there was aggressive lipo which unmasked my platysma bands. I am referring to the upper part of neck, at the angle of transition from under-chin to neck, where at least the skin is thicker than lower on neck. I have so little fat left under skin now that I have been told anterior platysmaplasty might give a smooth result. I do not care about a 90 degree angle, perfect neck. I want only to hide the banding if possible. Thank you for your opinions.