I personally believe they have produced some unfortunate results; that's just the way surgery works (unfortunately).
Was it a poor plan, for the patient, from the beginning? Would another surgeon have produced a better result? Would the patient have had issues, regardless of the surgeon? Was it an issue with the HA paste?
I don't know how to answer any of those questions. I think we all agree that you are going to get a different surgical plan from every different surgeon you consult with. When it's all said and done, who's going to have come up with the best plan, for what you needed? Again, I don't necessarily know how to answer that. I do know going with Arnett/Gunson sure as hell does not guarantee a perfect result. That would be too easy.