Just hear me out for a second:
Should the Spurs seriously think about trading for a certain Celtic now that Rajon Rondo got hurt and essentially ruin Boston's chances at a title or mediocre playoff success? While neither Paul Pierce nor Kevin Garnett would be good fits for the Spurs system, they are still legitimate star players, albeit on the tail end of their careers, which would catapult the Spurs to clear favorites to win it all, depending on what players are lost in the trade. I could realistically see Paul Pierce being a good fit for the starting lineup, with Manu coming off the bench as a reserve during the regular season, but switching the SG with Pierce as SF. While this might mean losing Stephen Jackson, Gary Neal and more than likely either Tiago or Kawhi, it would definitely help in the short term, while hurting us in the long run. Because of the offense creating open shots, Pierce would be able to shoot from downtown or use isolation sets when the offense is stagnating and whenever the Spurs need absolutely SOMEONE to create instant offense. He'll be relied upon less offensively, allowing him to rest more and conserve his energy for the playoffs, where he shines.
As long as we don't lose any of the Big Three in the process, I would be fine trading for him. I got THIS trade to work, but we would lose very important players in the process: the bench would get weaker, the frontcourt as well, but our backcourt/wing position would be the best in the league. Parker, Ginobili, Pierce, Leonard, Green and Neal. Three star players and three starters anywhere else. I know the Spurs are at the top of the league right now, but I feel like they need another extra piece in order to really get on OKC's level talent wise, and with the efficiency of the Spurs, I'm pretty sure they would win in the playoffs, where the starters play a lot more than the bench. Imagine: Parker and Ginobili in the backcourt, Pierce on the wing, Kawhi/DeJuan/BONNER at the 4 with Duncan in the middle. Pretty good lineup, with the 4 spot being interchangeable depending on what lineup you want: small (Kawhi), tough (DeJuan), or shooting and decent play (Red Rocket), this team would beat any other team on any given night. Just too much star power, especially on the offensive side, and if Duncan can be that defensive anchor, they would terrorize the league.