Looking back on the ending of WoR, it states Kaladin is going to go back to Hearthstone, his hometown. His family, Laral, and Roshone are still (presumably) there, and I'm guessing that Kaladin won't be too happy to see the latter. I'm guessing either he will kill/imprison Roshone or follow the "I will protect even those I hate, so long as it is right," and defend against the transforming parshmen. Though then again, it might not be "right" to not persecute Roshone, because he did basically kill Moash's family.
Next, there's the matter of Laral. My guess is that she'll try and get close to Kaladin, then pretend to be shocked when he refuses. Or maybe Kaladin will be tempted be her and it create another conflict, albeit not as big as deciding whether or not to kill Elhokar.
Finally, there's Kaladin's family. Because him and Tien were ordered to serve a four-year tour (correct me if I'm wrong about that), his family still may not know that Kaladin was made a slave and Tien was killed, though the army may have sent back a letter describing their deaths and enslavements. I'm guessing that there'll be a lot of sadness over Tien's death, possibly hating and shunning Kaladin for breaking his oath to protect him.
So yeah, there'll probably be a lot of emotion in this part. What does everyone think?