I hated losing TA. He was the best perimeter defender in the playoffs. He was the only wing on our team who consistently crashed the boards and ran in transition. His ability to generate steals was incredible.
That said, his role was always going to be limited with Rondo on board, especially in tight playoff games where points were at a premium. And the Celtics are fairly well positioned in his absence.
The additions of Bradley, Wafer and West and the re-upping of Daniels and Robinson gives the Celtics a ton of (potential) flexibility in terms of line-ups and potential midseason trades. 4 of the 5 players have played major roles on good playoff teams and the 5th is a highly touted prospect who happens to possess similar raw tools to the "new wave" of point/combo guards, i.e. Derrick Rose and Russell Westbrook. Their skill-sets are diverse: Bradley is the defensive specialist with a jumper, West is the Swiss army knife combo guard, Wafer is the streak scorer with wing-size, Nate is the streak scorer who can play the point, and Daniels is the herky jerky slasher who can play some D.
If say West and Wafer attain their prior levels of performance and solidify the back-up roles at the 1 and 2, that would allow the C's to offer a pretty enticing package of Bradley (long-term prospect), Nate (legitimate bench scorer signed to a reasonable short-term deal), Daniels (expiring contract) and maybe even Baby (versatile, high-profile young player), if either Gody or Erden pan out, to bring back an impact wing making $10-14 mil.
Players that might fit the bill: Tayshaun Prince (great fit, still relatively young) and Jason Richardson (great long-range bomber, good rebounder, great transition player). Subtract a contract or two and guys like Ariza, Diaw and Battier come into the conversation.
Even without a home run trade, there are some decent and likely available (for the right price of course) players out there that could bring a lot of what Tony offered. Renaldo Balkman, Luc Mbah a Moute, Carlos Delfino and Jamario Moon spring to mind.
Bottom line is that TA's 8-15 minutes of playoff time have a solid forecast of being filled by a player of similar quality. Even if we're stuck with Daniels in the TA playoff role, the drop won't be anywhere near as steep as Posey to Scal/Finley was.