I have to agree with Imhotep. Sing's body/fingers/head does not match that of the mysterious Jedi. I don't think that you are going to get your victory lap Djsting.
Yeah, rewatching the fight scene today, the body type doesn't really match, it would still be an awesome twist if it was her. And now I begin to wonder what the heck Luminara was doing while Bariss was talking to Ahsoka and when she went to attack Ahsoka (if she did). Quite the mystery
I wish they didn't make it a feminine character so it could just be Maul and we could know what happens to him after he starts serving Palpatine.