I think at least part of Kaladin's future ideals will be related to how he was unable to protect people and then blaming himself for it. While I certainly hope I'm wrong, I think something terrible probably has happened to either one of both of Kaladin's parents. I can sorta see Roshone continuing to torment Lirin and since he has already taken Lirin's sons, Roshone will do something to Hesina (Kaladin's mom). Obviously, Kaladin will blame himself for it all.
Lirin has always been a light in Kaladin's eyes, someone Kaladin truly loves and admires. Kaladin even once mentions to (himself around) Shallan, what would have happened if he had to have been the one who brought light to his family instead of his parents or Tien. I think Kaladin is heading into a situation where he will need to be that light. What would Kaladin do if he comes back home only to find his mother dead, and his father Lirin probably now a self-loathing drunkard feeling he has lost everyone and everything he has cared about in his life. Lirin believes everything hopeless with his sons dead already, the town of Hearthstone scared away for good, and his wife, the last person he loves in the world taken from him.
In terms of character development, it makes a lot of sense that Kaladin's reunion with his parents will be the foundation for whatever his next Ideal will be. I certainly hope I'm wrong though, I want Kaladin to be happy but that's not going to happen.