Doesn't make sense to add to the Big 4 over the summer. Even if KG and Ray re-sign for minimum salaries over the summer, they will be 36 and 37 years old, respectively.
Say we get Kaman over the summer:
Rondo - 26
Allen - 37
Pierce - 35
Garnett - 36
Kaman - 30
Just on age alone, that's a .500 team. They'll play like champions on occasion, but nagging injuries, fatigue on back-to-backs and old legs vs. athletic teams dooms them from getting a decent playoff seed.
Orlando has a habit of acquiring last legs players. I say ship them Pierce, let KG and Ray walk, tank 12-13, then go all-in for Dwight Howard.