In my opinion body enhancement is not dedicated to porn.
I agree that new and especially young porn babe should be encouraged to start enhancement as early as possible... but in my opinion every girl should be encouraged for a combo made of diet to be thin, fitness to be strong and plastic surgery for everything else.
I also agree with you about the size: not massive, but large enough to be obviously surgicaly enhanced... at least after a second breast augmentation surgery (first surgery can be used to discover the pleasure of being enhanced, etc.)
I also agree with you about the multiple enhancements possible: lips, ass, nose, lips, hair... but in my opinion you forget the labiaplasty
I did it and I can tell you how beautiful it is and how pleased I am.
So the younger the better, life is short