Perks rating is fine, honestly he is just there to take up some space and get some garbage buckets. Just like in real life. If he was rated 80+ the Celtics starting 5 would be ridiculous.
I'm glad that Rondo is an 83, a much needed improvement. He doesn't need to be the main guy, but he needs to be able to finish in the paint (like he can IRL), and hit that 15 footer a fair bit of the time. In 2k8, Rondo had to have a wide open lane to the rack or he would miss, and shooting with him was almost laughable. I can't wait for 2k9.