Sorry I hadn't seen your post...
Are you talking about my case (from the pictures) or in general?
The whole surgery is starting to scare me and I'm considering orthodontics but I don't think I will see a much difference. The orthodontist tried to show me pictures of patients who had more or less the same teeth and mouth "features" and the before and after wasn't that noticeable (especially from the front).
I was talking about both your case and in general in regards to jaw issues of your kind.
It is highly unlikely orthodontics will address your issues. Only jaw surgery can fully address where the abnormal growth occurred in yours jaws and correct it.
And a horizontal advancement genioplasty will camouflage it by improve your profile and probably reducing the "longness" you see and possibly reduce the gap between your lips at rest.
I think I said this before, you don't have a long upper lip. When you close your lips it elongates because you have some lip incompetence so you're forcing it. You already have quite a youthful look and your lips being thick enhance that.
If you had just a lip shortening procedure, yes it would reduce that distance that you dislike but you also will
worsen your lip incompetence because your upper lip would be even farther from your lower lip. So when you'd force your lips closed, your chin would strain even harder. You don't want that right?