I get that since its literature there needs to be obstacles to overcome with relationships but Kaladin killing Shallan's brother is too tall an obstacle to get over. I don't care how much I think I love someone, if she kills one of my sisters, I think it's time to see other people.
If Shallan ends up with either Kal or Adolin, I'd go with Adolin, but Shallan is a strong independant woman who don't need no man.
Copied a comment I made on Reddit a few weeks ago about this topic:
I don't expect Kaladin + Jasnah to happen but it'd be pretty awesome. We have the reunion with Laral soon, and I didn't read the spoilers about what happened with Tarah, she might still exist, so who knows. I'd assume that Kaladin will end up alone, though. Which is a bummer, dude needs some lovin'.