Grant Hill can't guard Kobe anymore. I don't think there is a player on the roster (maybe Josh Childress) who can guard Kobe. And we don't have a playmaker like Kobe either. Unless we have a lights out defense + shooting night, we aren't going to beat the good teams with legit playmakers (i.e. Durant, Kobe, Rose).
Anytime the opp. defense over plays the pick and roll we struggle to do anything on the possession. We can't just be a one trick pony with the pick and roll and Nash isn't the fastest guard to break through the pick and roll. He's never been blessed with many calls his way either if he gets pushed around on the P&R either.
The positives:
Gortat is a legit beast
Morris is going to be a serviceable NBA player at the very least
Channing Frye is getting his three on.
Ronnie Price looks decent. Better than Goran Tragic last year (although he's played pretty well this year).
Break it up Sarvar you douche.
Nevertheless break it up, trade Nash when he still has value Sarvar. He's still a very good PG and could put a contending team in a better situation. I don't know what I'd want from the Knicks for Nash. I'm not a fan of Fields who looks pretty crappy now and Iman Shumpert isn't enough for Nash.