I'll be the mood killer, I think it's Adolin that's going to fall and I think it's permanent.
I think Dalinar, for this book, going to stay alive he's too important to the situation (the war,visions,KR).
Renarin will get his own spren partner in this book or next so the potential of him being part of the new KR order in the future is high, there is a lot of room for him to grow with his blood weakness, new shardplate and shardblade(which his brother gave him, another thing to make him gloomy after Adolin death).
and let's face it, all of Kaholin family surviving till the end, all of them with powers, it's just too easy.
now why Adolin? he's the backbone of the Adolin family, he got the thrill, he's impulsive and somewhat arrogant. if he's going to hit the bucket many changes are going to happen to his family - Dalinar going to force his way to end the war, and Renarin will finally leave his brother's shadow and get himself known for his brilliance.
so there you go folks, my reasoning.