I believe my problem is that I originally had a flat face already...
I was thinking this before reading through the thread. Your retruded maxilla helped camouflage the lack of cheek volume and retrusive chin, plus probably kept your nose from being upturned. But I also think the lighting of your before/after profile shots are deceptive, because the before shot shows lighting directly on the front of your cheeks and the after shows a shadow where it's more apparent. Also keep in mind that those poses are going to subconsciously influence everyone's perception of your attractiveness. In the before shot it appears you have a confident, sexy attitude going on with your squinted eyes and in the second you look like a scared/unsure-of-herself puppy. If these were both before shots (same bone structure) but with the poses unchanged, the "first girl" is more attractive.
In any case, I think the best bang-for-your-buck improvements are in this order:
1) SG for chin
2) Nose straightening to bring less concave which would also bring the tip back down
3) Something for the cheeks
The sliding genioplasty should definitely have been performed during your lefort, and it's unfortunate that it was not. If I was you personally, I'd like to think that I'd get my chin advanced and call it good. The morph posted above by needadvancement is achievable with this and makes you look good. An ante face is a good thing, despite what some folks on here will say. After that, if you remain unsatisfied with your appearance, I'd definitely go to the nose before trying to mess with the cheeks, both because I think fixing the nose would provide more improvement and because it is an easier fix from what little I've read of both rhinoplasty and cheek augmentation. Messing with the cheeks via fillers or implants (or even lefort whatever #) sounds like a nightmare... somewhere I wouldn't want to go personally.
Please take all of this as a nitpicky opinion of mine only. I provided it because that's what you seek. At the same time, I hesitated to respond because I know it takes an emotionally low state to sign onto an internet forum and discuss the features you feel are unattractive about yourself... I certainly don't want you to feel like you won't be pretty unless you fix everything I've listed. That is simply not the case. I'm just trying to provide a comprehensive analysis based on my perception of you from your photos. Again, I think you'd look great with a sliding genioplasty to advance your chin to the rest of your profile as is shown in needadvancement's morph.