If you just go for ONLY the revision and take whatever grafts that gets you ,youll have a MUCH better chance of a thinner scar.
If you go for another session youll probably be back to where you started,unless your stretchback was caused by something you might of did.
The majority of wide scars that were closed properly was because too much donor was removed to fulfill your frontal needs
Its a sucky tradeoff but it it what it is.
Excessive tension is usually the MAIN culprit.
No matter who the doctor is its almost impossible to meet you expectations in the front and just take the perfect amount of tissue from the back without some form of tension, especially in multiple sessions where laxity is an issue.
The great news is ths SMG is stepping up to the plate and standing behind you. That is rare these days.