I have a nagging (and perhaps unreasonable) suspicion that Adolin will turn out like Amaram did. Both of them are (were in Amaram's case) always being praised for being so loyal, brave, etc. Dalinar is always saying how Adolin will be a much better high prince than he was, but I feel that that might be too perfect to be true. Also, remember how Adolin was acting toward Kaladin at the beginning of WOR, he was acting in quite a petty and childish manner; he was jealous and angry with Kal when he had no right to be. Kaladin had to save his and his father's lives many times before he got anything but Adolin's scorn, and remember, it was saving their lives that started the whole behavior (okay, it was also bossing him around on the Tower plateau, but still, the point stands as Kaladin only told him to go away in order to save his life).