you can't find a duelist who speak thai to replace surf, he done his job pretty well, just XERXIA need to improve their discipline and aim, which isn't that easy to, hope they could get a better result in champions tho
I think its a 50:50 for John Olsen and Surf, but XERXIA playstyle doesn't really fits John Olsen, that's why I think Surf done his job well as a duelist in XERXIA, just they need to improve their teamworks and discipline to match the international stage competitive level