Ya know - if this isn't a case of "if it ain't broke, don't fix it", I don't know what is. Ray's a good shooter (no denying that), but defensively, he's not on the level of being a Hawk right now. He's too damned old to be! You suddenly take away some playing time from somebody like Bazemore - then friction will start. Then Bazemore is going to feel more compelled to take more shots and press harder - which might not work out too well.
This is a fine tuned machine right now. If I had to nit-pick, I wouldn't mind seeing a big body who could clean up the boards a little more, but 28 wins out of the last 30 really doesn't have me too concerned right now. :)