Vlad is too important to call him up simply to improve the chances of getting a wildcard this season.
The front office obviously has much better data and scouting on him than we do - if they feel he needs more time in the minors to give him the best chance of being successful and importantly to play 3B when he does come up, then that's how he should be treated.
A promotion to AAA, a September call up, then in the majors next season. Still an aggressive approach, but a realistic one.