I am not sure why there is this all or nothing thinking on this. I am not saying don't work on your pro swing at all. It's a drill that you could do once or twice a month or season just to open the eyes of some who think they have to come out of their shoes every time at bat.
Getting hitters on base is not mediocrity. Some would even call it success. Not everyone is made to hit for power. Think of this as maybe your sand wedge. You hope you don't need it but you have it when you do.
...just to open the eyes of some who think they have to come out of their shoes every time at bat.
This is the problem .
BUT, I don't think your drill is the most effective way to change the habit.
Just you wait, it will be mere days before you see my buckets on the field when some MLB team is taking BP. 
...just to open the eyes of some who think they have to come out of their shoes every time at bat.
This is the problem .
BUT, I don't think your drill is the most effective way to change the habit.
This is not a swing mechanics issue, it's a mental issue. The player must remove the thought of "results" (hitting the ball out of the park) in his process.
Secondly, I believe the only thought a hitter can have at the plate is "see the ball, hit the ball". Inserting a direction in which to aim a pitched ball is too difficult at the HS varsity and above levels. Golfers are able to do that as they have ample time before their shot to decide their course of action.
