I'd like to see Tool. There is a great example of a band perfect for Ozzfest in the sense that I'm not particularly inclinced to go to one of their headlining shows but I'd like a taste from an abbreviated set. Same goes with most of that wiki-lineup. The pee breaks: Killswitch and probably Stone Sour. Maybe Typo O. It's definitley not the most metal lineup.
Jaco died for our sins so that modern bass players could be free to play more and be heard.