I still enjoy watching them and admire they way they keep the ball and play their way out of any situation. It takes an awful lot of courage and skill, and the way they force every other side in the world to adapt to them and never the other way round is also still fascinating to watch. I doubt I'll ever see a national side quite like it again, filled which such superb players like Alonso, Xavi, Busquets, and Iniesta.
But I'd like to see them set up in a slightly different way. I don't care if they use proper number 9 or not, but I think they lack something in their attack under del Bosque (and without Villa). As others have also said here above, I don't see the need to use all three of Xabi, Xavi (who isn't nearly as influencial as he could be deeper) and Busquets, and think they miss players who makes runs beyond a defensive line. Both Silva and Iniesta like to get the ball to feet, and need players like Pedro ahead of them to be at their best, but are played in a position where they are expected (or should be in my opinion anyway) to not only link up with Fabregas/a striker, but also run beyond that player to open up the defence. They can do it of course, but it's not their natural game, and especially Iniesta is used too far forward and wide in my opinion. If they played with, for example, Busquets, Xavi (or on recent form, Alonso) and Iniesta in midfield, with Silva, Pedro and Fabregas in attack, I still think they'd have as much control of the ball and play as they do now, but also pose more questions to the opposition defence and be a bit more entertaining to watch. Del Bosque is not using his superb squad to their absolute best I think, but it's of course a bit silly to argue against him when he's one game away from another big title.