It would be awesome! It is one of the mysteries of the story. He must be very strong because he was the captain of White Beard, Big Mom, Kaido and other really strong characters.
New US fan here. I only discovered the franchise in late 2022. (Though I do have some vague memories of the terrible DIC English dub on Cartoon Network.) It was the Saintia Sho manga that got me into the franchise. Favorite characters would be Athena and Equuelus Shoko. I can't decide between the main five boys but my favorite gold knight is Aries Mu (my sign). Favorite arc would either be 12 Houses or Poseidon. Currently enjoying the CGI remake on Cruchyroll.
I love Saint Seiya Knights of the Zodiac so much. Masami Kurumada and Akira Toriyama are literally good friends and I hope Saint Seiya vs Dragon Ball Z will have a crossover soon as a film.