I'm fine with what Danny did, although I wanted Kenyon Martin for the minimum as we needed any frontcourt help since Darko was cut

Maybe Danny is done with bringing in veteran past-their-prime former stars. Now that this is Rondo's team, we're bringing former prospects like T-Will and Crawford, and I like it. It's not that the old movement was that successful.
As far as Birdman, never been a big fan, true that pretending him to defend Iron Man Green is unfair, he's lost a step or two physically, but he's getting just decent numbers per 36 (9 reb 10 points 2 blks... and 6 fouls). I don't know Shavlik, but I'd rather have DJ White who at least can shoot from over 3 feet.
We still need a 7 footer who can defend in the post and block shots, and unless Fab Melo gets inspired, we won't get that guy until at least next draft. K-Mart or Birdman wouldn't solve this need either.