I've never gotten the sense that Caso was all that much revered, tbh. During about half of his tenure, the talk focused on Marland as HW, which really does say that no matter how much skill an individual may possess as an EP, you can't have a good show without good writing. The remainder of Caso's tenure, unfortunately was marked by stories that were either dull, depressing, or just didn't really work, and for better or for worse, it is that part of his tenure that stays in the minds of many ATWT fans.
I mentioned Caso as being a likely good interview based on some things I've heard him say in the past. He seems to at least have a sense of self-awareness and he seems frank, without vanity and knowledgeable about the limitations of the job and the industry. It's not perfection that makes someone a great interview, it's honesty, awareness and the ability to provide insight free of arrogance or defensive posture.