Nene is one of my favorite players. He's really one of the only bigs aside from LMA, Gasol, Horford, and Howard (the only other Center) that has a really good defense AND a really good offense. He's recently shown an excellent face-up game despite his less-than-great jumper, and has gotten better at creating his own shot.
With Rondo he'd be great. He's nowhere close to MLE money though. He's already a top 20ish player, and I think he has a chance to be the second best Center in the league next season depending on the health of Bynum and Bogut.
I'd like to see him get some time at PF next to another excellent defender and better rebounder/shot-blocker. He might be one of those guys that needs the speed advantage, but I'd like to know how he'd play at his natural position.