I can't believe all of you saying "don't shoot 3's".
We just won a championship two years ago because we had a 4 who kept the defense honest from deep and opened up driving lanes for our guards. You park a guy like Miller in the paint alongside another lane-clogger like Brimah, you waste his talent and bog down the offense. Miller will excel in the pick-and-pop game and be a better presence on the glass than DD was (though his overall game probably isn't as good).
Like Larrier, Miller's problem was shot selection. In Larrier's case, it was because they ran a frenetic offense. In Miller's case, it was because he was the offense. In our system, Miller won't have to take off-the-dribble, pull-up 3's. The ones he takes will be spot up.