I'm not too sure about those names, aural. I do like the concept, but it just sounds...weird. A good compromise would be Darth Vader always being Darth Vader, as he never becomes a Jedi Knight and he is not required to change his name to become a Sith. I can live with Anakin being Jai-Yun for a while; Obi-Wan and Padme would call him "Anakin" anyway.