Another thing to consider...while Ray has never been considered a "defender" he did a pretty admiral job on:
Dwayne Wade, then
LeBron James, then
Vince Carter, then
Kobe Bryant...
I'm not saying he shut these guys down obviously but he played some good savvy, tough Vet D on them for the lion's share of the time.
Was it any wonder his legs may have been shot and his shot suffered?
I'd say your besy option is to:
A) sign a good scoring wing to back up Ray and Paul when offense if needed and just to generally keep them rested ( miller, Outlaw, Reddick
B) As someone else has said and to also re-sign Tony as your defensive demon behind Ray when major D is needed.
Between Tony, the "scoring wing" signing, Harangody or Gomes maybe just keep Paul and Ray very, very well rested all season.
and beat up on people with your depth.