If ownership were willing to splurge on the contract I'd do Ray for Miller and Jamison and hope that Ray gets bought out to field an embarassment of riches at 2-4 positions.
Jamison is outrageously expensive, but he's a nice upgrade to Big Baby. Miller would,IMHO, be the most valuable player in the trade. He'd give us a functioning elite shooter who can actually rebound, handle and pass. Basically what Ray can't do so well anymore. Resign a bought out Ray and trot a playoff rotation of:
Rondo, Daniels
Miller, Ray
Pierce, Ray
KG, Jamison
Perk (in a much reduced role), Sheed
Definitely no more athletic than we were, but we could expect a return to the elite level shooting that made our offense so deadly last year, while our league leading defense should remain intact. Our rebounding would improve with the addition of Miller to the rotation. Ray's freshness coming off the bench would probably also increase his deep shooting, defense and rebounding. The Ray/Daniels bench backcourt could really force a lot of mismatches as well.