Aside from that, a targeted approach to fillers isn't any more flawed than not doing any fillers. Because it will still go away unevenly.
I would take issue with this. While there is definitely a bit of unevenness in aging, it's not the same as adding it back by eye-balling it. Natural unevenness will always look better than filler in the wrong amounts/places. This is a highly oversimplified way of looking at it. Even working on a 3D model with an undo button would be difficult - let alone working with an unpredictable solution through a syringe (in the case of fat, can grow, resorb and change post surgery).
To the both of you:
I understand what you guys are saying, and while I didn't feel like I was being harsh (nor do I think my wording has reflected that tone), perhaps I misjudged it. I suppose my outlook is: not every problem with how we look needs to be fixed. The OP has a great feminine facial shape and features. I believe most surgical recommendations should be for deformities, and generally aren't worth the risk for minor flaws as I see them in this case. Nonetheless, the only minor flaws I see are soft tissue related.
In other words OP, I would recommend against a chin procedure...