Tummy tuck done a couple of years ago. Why is a vertical scar needed for a revision? (photos)

Although you have skin laxity above the umbilicus, there isn't enough to let the old attachment to the belly button (which becomes a hole in the skin when it is detached) to travel far enough down to be cut out with excess skin. And btw, your transverse scar is already too high, and a small vertical midline scar is much more inconspicuous than a high transverse scar. Let the doctor do it and ask him/her to lower your transverse scar as far as possible.

Dear New Jerseyan,
Thanks for posting your pictures and sorry for your sub optimal result. From observing your picture you absolutely do not need a vertical scar. In my practice of over 34 years I have performed abdominoplasty surgery on well mover 1500 patients and I have never used a vertical scar, including many revision surgeries. Most likely, your skin above the umbilicus (belly button) is loose enough to be able to bring the old belly button hole to the pubic bone, which will avoid vertical scar and the horizontal scar will be lower than what you have now. It should be just above the pubic bone and along the groin crease.
Always, consult with experienced board certified plastic surgeon who operate in accredited surgery center for your safety. Check the before and after pictures in the photo gallery to make sure that the results are numerous, consistent and attractive with flat stomach, narrow waists, nice belly button, improved body posture and low scar.
Best of luck,
Dr Widder
widderplasticsurgery.com