I think the main issue you are describing is that your nipples are sitting a bit lower than what they should. That's why you feel there's a bit of bounching on the lower pec, because this where the nipple should actually sit. Also lifting the nipples a bit higher would stretch the skin underneath and also fix that sagging on the lower part of the nipple you are describing. Usually such procedure is done at the doctor's office using topical anesthetic, so there's no need for an actual surgery. You may want to discuss that option with your surgeon too since it's far less invasive and will very likely fix most of the issues that bother you.
I think the main issue you are describing is that your nipples are sitting a bit lower than what they should. That's why you feel there's a bit of bounching on the lower pec, because this where the nipple should actually sit. Also lifting the nipples a bit higher would stretch the skin underneath and also fix that sagging on the lower part of the nipple you are describing. Usually such procedure is done at the doctor's office using topical anesthetic, so there's no need for an actual surgery. You may want to discuss that option with your surgeon too since it's far less invasive and will very likely fix most of the issues that bother you.
That's really helpful! Thank you, I might have a chat with her when I go for the follow up :)