2011-05-02, 09:34 PM (ISO 8601)
Bugbear in the Playground
Re: Optimizing Critical Confirmation
Complete Warrior feat: Power Critical
Requires: Weapon Focus with relevant weapon, BAB +4
When using the weapon selected, you gain a +4 bonus on rolls to confirm critical with that weapon. You may take this feat multiple times, and may select the same weapon or a different one. If you take it with the same weapon, the effects stack.
That's the only thing I know of. That said, I don't have any homebrew sources.