I would give this plenty of thought. First, the deficit on that side of your neck, the missing volume that was removed of lymph nodes, muscle tissues, and surrounding fatty tissues, will still be there scar or not. In many ways that is more obvious to those that look than the scar itself. Second, if you are like most of us, you have a "gobbler" of tissue at the front of your neck left over as a result of all this....what is to me done with that? A new scar to remove it? Lastly, I can't remember if you have been radiated. If you have, all this is something that I would not venture into since you will have different healing issues than the average patient the plastic surgeon sees. While I am self-conscious about my missing part of my neck, these days it is a badge of honor....the evidence each year that I am still here, and still fighting. It is as much a part of who I am now as the scars I got from my time "in country" courtesy of Uncle Sam during two tours in the jungle, the gash on my knee from a little stint in Nicaragua, and the little piece of metal that is still stuck in my ass from a quick exit from Lebanon.