Boog is a great broadcaster - but he does not seem emotionally/spiritually invested in the team. He's fine, but it would be nice to have both.
There is a premium broadcaster doing TV PBP for the biggest sporting events in the world who I know for a fact is a died-in-the-wool, from-birth, lives-and-dies-by-it Cubs fan:
Kevin Kugler - I would love to see him in our booth