This is an interesting topic. I think if Miami is smart they'll go big with Wade, Miller, LeBron, Bosh, and whoever at center. Even Wade will struggle guarding Rondo, and this still gives us an advantage with whoever Miller has to guard (Ray or Pierce) but they won't be running around trying to help on Bibby's man for the whole series.
That said, I don't know if Miami is that smart, so they'll probably just play Chalmers a bit more once we chew up Bibby for a game or two.