I always believed that he/she was Daryl, as she seemed the most likeliest of candidates. I haven't really been involved in a lot of identity discussion recently, so I cannot say who the newest inquiries are, but I have always felt that Daryl was the most likely person. Either her or Emperor Gestahl, as he had one of the biggest reasons to help the cast defeat Kefka. As far as accusations that, since Gogo existed prior to Final Fantasy VI, in the form of his character in Final Fantasy V, well.. different universes = different people, nyah!