Better Coaches in Minors?

[cityhelper]

So I get that obviously you want to have great coaches in every position and at every level BUT I know that is not always possible.
My question: Is it better to have, for example, a LEGENDARY pitch coach in the Majors or a minor league team? Let's say he is excellent at both veterans and rookies too. So where would he be most valuable?
Or has anyone really noticed any difference?

[1998 Yankees]

Good question. Having quality coaching at the majors level is important due to this phrase from the online manual:

the more likely veteran players are to perform at their expected level or above

But, forced to make a choice, my own preference is to give priority to having quality coaches in the minors, particularly those who work well with rookies. The reason is this:

the more likely young players are to develop [hitting/pitching/fielding] skills

My reasoning is, if these players never develop into their potential, there's not much the major league coaches are going to accomplish with them, is there?

[cityhelper]

Thanks!