I am excited for this years playoffs but have also been think alot about next season. I agree to a point with you that we need a guy who can get his own shot. This is one reason why the rumored Ray for Mayo trade last year hurts so much.
This comes with alot of assumptions but lets say the following happens.
1. PP is brought back
2. RR is at least 90% for start of season
3. Sully is at least 90% for start of season
This actually leaves us with a depth PROBLEM. Doc struggled with to much depth earlier this season and next year could be ever worse. With Rondo, AB, Lee, Terry, and crawford all under contract someone is not going to be happy with their minutes. With KG, Sully, and Bass we will again be stuck with the less than perfect Sully and Bass pairing (with KG likely playing less minutes then this year). At SF Green should surpass PP for total minutes while also getting time at PF.
Rotation
PG Rondo 35min, AB 13min
SG Avery 17min, Lee 20, Terry 11
SF Pierce 28min, Green 15min, Lee 5min
PF Sully 15min, Bass 18min, Green 15min
C KG 28min, Sully 15min, Melo 5min
This leaves Crawford as the odd man out and Terry not very happy.
The best solution to what this team is going to need would be to trade a combination of Terry, Bass, Melo and possible this years pick for a big man (easier said then done). Ideally a big who is under 27 and has the length to disrupt shots when KG is on the bench.