Benelli breast lift revision surgery to correct stretching. What should be done differently?

The Benelli (or donut) breast lift is fine for smaller breasts, ones that don't need much lift, and when used with no implants. In larger or heavier breasts the circular stitch (even permanent ones) can stretch out resulting in openings, scar widening, and flattening/widening of the area.

Dear Sensible57165,
Benellis lifts are always limiting. A vertical lollipop lift would have been my recommendation from the beginning, which should provide you with great results. I would stay away from anchor type pattern lifts (Old School Surgeon Technique) as they tend to flatten the breast and make a boxy appearance. Aggressive scar management would likely yield virtually invisible scars after the lift as well.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

You did not post photos, so I cannot be specific. However, the Benelli lift is limited in what it can do. When asked to do more than it is designed to do, sometimes the incision comes apart. You might need the vertical component. Please discuss this with your surgeon.