I first discovered Brandon Sanderson as an author through WoT, and boy am I glad I did because this series was just what I was looking for to fill the void that requires an epic fantasy. Since I began this series Adolin has been my second favorite character and I have been hoping that his role would continue to grow as the series progressed. I believe that he will become a KR and it's for the same reasons that have been listed throughout this forum, and this topic thread particularly, and the fact that he has had multiple POVs, and I think he's close behind Kal and his father for most could be wrong on that part, throughout both novels. To me an author doesn't use a specific character for multiple POVs unless they have a big role for planned for them in the future. We have seen this in other epics such as WoT with the three ta'vern and A Song of Ice and Fire with the still alive Stark children excluding Rickion. Finally we know that there will be ten volumes representing the 10 Surges, Heralds, etc., each with a different focal character. Here are those characters:
Brandon Sanderson revealed that each of the ten books in the series will have a focal character who gets flashbacks.[2] Brandon listed the ten major view point characters for the series to be:[3]
Kaladin, featured in The Way of Kings.
Shallan
Szeth
Navani
Dalinar
Adolin
Jasnah
Taravangian
Taln
Another Herald
So according to this list I count 5 KRS (yes I'm including Szeth because of his encounter with Nal) and two Heralds (the other Herald IMO will be Jezerien). As for Taravangian I believe he will be the champion Odium uses because he will become angry and jealous of Dalinar's position. Sorry for the length.