i agree that improvement from some of those is to be expected. agree about Diaz/Hinske and Heyward and BMac. But CF still looks below average, and Esco doesn't currently look like he's going to rebound, though no one seems to know what has caused the drastic drop in production. Glaus looks like he'll be below average for the position for the rest of the year, May is looking like a fluke. So that looks like below average at SS, 1B, and CF, and average at 3B (maybe above, only due to poor peformance there throughout the league) and LF, and above average at C and 2B, with Heyward being either average or above average for high-producing RFs.
maybe i should clarify. that lineup is suitable for the regular season, but my concerns come from having to play an ace twice in a 5 or 7 game series. those may be the two best pitchers in the game (Santana has not been so far this season), but that's who you have to beat in the postseason. that's a decent lineup, but one that looks like its only good enough to get to the postseason, not to win there. and i don't see a good spot to upgrade, as i don't think there are any CFs available that are any good (and Schafer hasn't been producing in the minors this year yet), ditto for SS, and a LF acquisition would break up the platoon.
i think that we can't get Philly or NY in the first round is a big advantage for us.