Switching Implant Profile? (photo)

The normal breast doesn't have the maximun upper pull. If it did it would look odd and wouldn't be an attractive breast... Upper pull is maximized with a high profile implant. Speak with your plastic surgeon and go over all of your options. In my opinion switching to a high profile implant will yeild the results your desire .

When doing a revision you need to address the things you don't like or that you do like. If you like your width you need to stick with an implant of similar width but a higher profile.  If you use the same profile but larger  cc's you will not be any rounder on top.  You have marked asymmetry which will probably be best corrected by changing both breasts a little.  You should discuss with your PS which breast you like better and try to match that one.

Upper pole fullness is enhanced by submuscular placement. larger volumes and fullness higher on the chest. You have not mentioned a change in volume. For the same volume, high profile implants stick out more; however, they also have a narrower diameter and do not reach as high. The limit for increasing diameter is more the width of the breast than the height.

Your breasts sit lower on your chest, so the simplest fix is to wear a bra. Surgically moving the implants up will leave the nipples low, so a lift would be needed to raise the implants and keep the nipples on the front of the breast. This will also allow for more complete correction of your asymmetry. A lift means more scar on the breast, so there is definitely a trade-off.

You should consider getting another in person consultation, as it is not a good idea to make surgical plans based only on pictures. A full history and physical exam are needed.