I think sometimes too much is made of this whole Defense thing. The Cav's are a very good defensive team and completely focused on D. Tell me what was the reason the Cavs lost to Boston? They couldn't figure out how to score against Boston's D!!!!! Was it that Boston's defense was so great or was it more that Cleveland's offensive attack was so bad and didn't have an answer for the adjustments the Celts made?
Lebron needs an offensive mind like MDA who can show him more ways to beat a defense. Plus we'll have a better core of players around him that can also take charge offensively and not just stand around and watch. With MDA's system being one that is more about ball and player movement, it will be harder to defend Lebron. That Iso crap will not happen again.
Now as for D. We'll be giving MDA better defensive players so that we can get stops when we need them. The defense will look a lot better when you have more defensive guys and more commitment to D. I fully expect that LEbron would insist that his teammates give Max effort on D. That's the difference when your best player demands D. Just like KG demanded more effort from his teammates. We've not had that since the Ewing/Oakley days.