Coaching for new ministers

I just had a brief but interesting conversation with a FB friend about the value of coaching ministers as they begin a new ministry.  He mentioned he is involved in a two year coaching relationship with a new pastor and shared some comments from the pastor about the difference this has made in his life and ministry.  Although I've coached a number of pastors, I've never intentionally developed a coaching relationship with a pastor at the start of his or her ministry.  That seems like it could be a great way to assist a new pastor or even an experienced pastor who is beginning to serve in a new place.  What are your thoughts?