Nene is a good player but he is not the answer.
First - He is not a true center. Does he even have a post-up game? If he does I have not seen it. Most of his basket come from dunk, put back or layup (bc of attention Melo draw when he go to the basket).
Second - He is not a that great defensively. Averaging about 1 block a game. I saw Bynum (whose is not 100% yet) absolutely abuse him underneath the basket a few weeks ago.
Third - He is not a good rebounder. He only getting 7.7 rebounds a game (almost a career high). Last time I check, the Rocket need help on the board.
Fourth - He want alot of money (10+ mil a year). I don't think he us worth it.
I think we the Rocket would be better serve if they get Kaman (if he is healthy) or Dalembert or Asik. I think the best case scenario I pray for is The Rocket getting Marc Gasol through free agency or a young center in the draft.