You guys are looking at the world through emerald colored glasses. 2007-2008 was a perfect storm: the league wasn't prepared for them. They also had bench players who delivered.
This year, the only "bench" player who delivered in the playoffs was BBD (with the exception of one game by House against Chicago), and BBD became a starter when KG went down.
Right now they have no bench and NO MONEY TO SPEND ON A BENCH. They will have even less money after they extend Rondo (assuming he's willing), which will cost at least 10 million a year.
Powe and BBD are unrestricted free agents. House has a player option. Marbury and Moore both sucked, and I would not consider bringing either one back. Rivers has no confidence in Tony Allen, and he will most likely be traded for crap. That will be good for Tony, who is a poor fit for Rivers' jump shot intensive offense.
That leaves Pruitt (another player who has been shunted aside by Rivers),Walker, Giddens and a Turkish stiff who the PR types will try to convince us is the second comong of Okur.
They have no first round pick, only one very late second round pick. And why should decent veterans like Rasheed Wallace want to come to Boston for the MLE? The Lakers, Cavs, Nuggets and Magic have MLE's too. These veterans want to go to (i) a winner, (ii) a team where they can start, or (iii) a team that can offer more money. The Celtics can't offer any of that.
Their only tradable asset is Ray Allen's expiring deal. And for that to have value,they must be willing to take back contracts in exchange, putting them even further into luxury tax hell in a down economy.
Finally, I think Garnett's injury is MUCH more serious than we have been led to believe. I wouldn't be surprised if Powe is back playing before Garnett. It isn't just a spur, it's a tendon that must be reattached to the bone.
This team is Detroit redux, except that the Celtics do not have young players who are nearly as good as Stuckey, Maxiell or Afflalo.