It’s common enough not to be a gimmick, but the real advantage is allowing surgery to be done by a limited pool of specialists that can cover wide areas.

So potentially the next step is specialists covering whole regions where the latency of fiber is still acceptable. Then as the equipment and training for telesurgery becomes more available/costs come down, you might see it used for smaller benefits of sterilization and travel/cleaning time within a hospital, even for more common/less specialized surgeries, and even if it's just a surgeon located at the same building or facility.