SPOILER *theory* BELOW
I'd like to think, since this is bound to be such a happy smiley show, that this Shaoran is some sort of weird tortured one, who never got to meet Sakura. Blah blah blah he's all crazy and out to kill everyone "cause his life has been hard" - However when he actually DOES meet Sakura he's like "wow...she was nice" and then there's bound to be a situation where the 2nd Sharon needs to die or atleast dissapear to save Sakura...either way it's gonna be fun watching them meet up ^^