I'm kinda torn right now. I have always been a Kurai Liang guy. I liked his story arc and personality but also I'm usually inclined to play ice based characters... I never liked Hanzo's Scorpion, but this is Kuai Liang AND he replaced the katanas with one of my favorite asian weapons, the kurasigama (I loved playing Hanzo Hattori -not Hasashi- in Samurai Warriors) and the moveset looks great... but Bi-Han's moveset looks awesome too and the best and most versatile that Sub-Zero has ever felt... and I usually had Noob as one of my backups too.
In addition to those 2, I'm looking forward to play as Kenshi, Sindel, Johnny, Reiko, Kung Lao. Smoke and Quan Chi... my 10th spot is still undecided.