I'll be honest, I picked her up because:
A. She has a Morrigan Pallet.
B. Her combo's aesthetics are super neat (same reason I picked up Tsubaki.)
C. She's Chinese. And as evidenced by countless animes, Chinese people in games and Japanese television/movies are super badass. Litchi doesn't disappoint.
Oh, and trollin' my friends that are still learning the game with long combos and corner-faggotry.
I like to think it makes them strive to get better.
Maybe I'm wrong.