Blakely wrote an article after the Spurs game that "Blakely: Celtics need more experience to beat Spurs". It seems that on forums like this, people are quick to jump to trade options and various risky ways to get a start (wait for a trade, target a disgruntled star like cousins, tank to get to the draft lottery). But really, I think that there is no quick fix for this roster and Danny Ainge is doing things the right way: pick and sign good players with high character, develop them in a winning culture, and don't take shortcuts.
In the Brad Steven's interview with the Blakely article, Stevens mentioned that the Spurs bench players that killed them were West and Diaw and that both of these guys are starter quality players with experience.
Celtics should stay the course and not have a flurry of trades for the right now. This makes for a more boring discussion board, but for a better team long run.
Stevens also said: "if we play well, we have a chance to win." The Spurs game was like that. The Celtics are not good enough to say "if we play well, we will win". But there are plenty of teams that have to say, "if we play well, so what, we still can't win."
I do agree that we eventually need a star: a Cowens, a Bird, a Russell, a Havlicek, a Pierce, a Garnett (or even a healthy Reggie Lewis). But this star will eventually come by draft usually, but can also be by trade (Garnett) or development (Havlicek wasn't rookie of the year in 1962, some guy named Terry Dischinger picked at #8 right behind him was, so I think of Havlicek as a franchise star who developed).