I'm completely fine with the pairing, but I agree that the fallout of spoilers:end of spoilers Things got a little wobbly between the Nico, and Karolina but it could have easily toppled if they wanted to go more dramatic with things.
Nico finding out that Jonah killed her sister, followed by Nico "Killing" Johan didn't have as much impact as it could have.
spoilers:end of spoilers
I'm also interested in seeing major fallout from the fact that Leslie killed Molly's parents, and is now living in the Hostel.