I think Sareena has the best chance at having the KP2 spot. I honestly really want her as a DLC. I just can't stand Sindel. I hate her so much. Sareena is a much better choice and I think she has the best chance. I love Sareena.
I know a lot of people have been trying to guess who will be in the Kp2, and i though about it, this is what i think we will mostly like it to have.
Bo Rai Cho
Sareena
Frost
Robo Smoke/Li Mei
Fujin (Last DLC who will not be in KP2)
If we think about it, all the characters in the list except for Smoke have been redesigned to match MKX, and they're not NPCs either, so i think these have the most chances.
Although i wish we could have one more KP after this one.