Advice on vertical chin height enhancement with minimal horizontal advancement?

You have a history of a deep bite and there is evidence of a recessive chin in your photos so you are a candidate for a sliding genioplasty. Since the amount of chin recession is not severe, a chin implant is a possibility as well. Either will improve your overall facial balance.

You may be a candidate for a second sliding genioplasty. The plates and screws are removed and a second genioplasty is performed and further advancement can be achieved. Jaw surgery is not recommended since you have a normal bite.

The sliding genioplasty does not affect the teeth. You should be able to wear your retainers following the surgery.

Either a chin implant or sliding genioplasty would achieve a greater facial balance. In severe cases, I usually prefer the sliding genioplasty.

Based on the photos that you provided, I would recommend a chin advancement procedure to improve your lower facial balance. Either a genioplasty or chin implant is advisable.