My biggest gripe with Colby is his inability to stick with a batting stance. The one last year was working for him, and if I read the most recent article correct, that is the same stance that KS wants him to try again. He's ignoring what is working best for him and going in a completely awful stance at the plate. He also strikes out too much and a rally dies on his bat.
He has a lot of potential but his inconsistencies, high K, inability to listen and past emotional issues just make him a headcase.
I'd rather have Gose full time CF next year till Pompey / another replacement is found. Yes, Gose may not have as good power or hitting as Colby and strikes out just as much, his speed, defense is much better complements this team's other hitters.
Plus he'll be a hell of a lot less cheaper.
E: Also just realized that despite his wRC+ being less than Colby's, he has a better WAR while Colby's is near replacement level. Didn't know that. huh.