Diaw was a bit of a mixed bag from what I saw but not having KL hurt our closing unit. Diaw had to bang with Zbo on the block (he's okay but not as good as Bonner and Splitter) but his 3's and his passing ability can offset some of the offense ZBo might have. Randolph killed us on the glass, especially in the OTs. Thats really where Leonard would have been a big help, considering Leonard's a better rebounder than Diaw and helps Duncan crash the glass.
Bobo did hit some massive 3's though, which also should boost his confidence from behind the arc.