I think Krstic has done as well as expected on the defensive end. This does not mean he has done well, but they had to know that going into the trade. They likely surmised that with the 25 games or so he would play, he would get enough of the system to be adequate. I think that will happen.
I like the point about Krstic about being a better center than Nate was a point. Nate was downright horrid at times...had he been part of the PO rotation, we would have been in trouble. On the other hand, we will be OK if Krstic plays as #2 or #3 on the depth chart.
Having Green will help a lot in the POs IMO. He, Paul, and Ray should rotate at 2/3, with Green sliding to 4 on occasion. That's a great rotation - not only is he like Posey, he's better IMO. Plus, Green poses match-up problems.
The point has been made that we need Shaq and even perhaps JO to win #18. I think this would have been the case even without the trade. Would a front-court rotation of Perk, KG, Baby, and perhaps Murphy wouldn't have got the job done? To boot, we would have been in trouble backing up Pierce and maybe Ray.
Let's hope Green/K gel as fast as possible, and the O'Neal twins get their aged bodies back on the court...