He has shown elite discipline so far, and as has been repeatedly discussed, the pitchers at A and AA have been absolutely unable to beat him in the zone. That's a huge point in his favor, no doubt. But he has 41 PAs at AA so far, so let's pump the brakes on assuming he will continue this and be able to do the same at the MLB level.
I want him to be able to do so as much as anyone. It would be awesome having him in the OF next to PCA for 5+ years showing elite discipline and baserunning and what I would assume is very good defense. If he can keep this up in the MLB, he will be an extremely valuable player. But he isn't even close to being MLB ready yet. There are so many players who have dominated A and even AA and just never could get over the hump at AAA, let alone the majors.