In 3.5 D&D, Wizards are Tier 1, but few people played them in a way so as to overpower everyone else. It's about capability, not actions.
You get to hang out with the optimized Truenamers from the D&D tier system?
Oh, no, there's lots of things with stuff worth taking, once you take into account artifact components.
The tears of just about anyone you beat is probably good for making something.
Alternately, you're an elder Celestial exalt and your paranoia is an extension of your crazy.
I envision that at the time of the Usurpation, many Solars probably seriously engaged in Paranoia combat, which is why even a mass ambush with overwhelming power left enough Solars alive enough to obliterate the entire city they were fighting in and turn the Usurpation into a brief world war.
Well, there's not really much to say about optimization outside of combat mechanics.