Here's a couple I just thought of
Legendary Damage Reduction (Cosmic) (Ex)
Benefit: Your damage reduction value doubles, and becomes /- if it isn't already.
Transcendental Damage Reduction (Transcendental) (Ex)
Prerequisites: Legendary Damage Reduction
Benefit: Your damage reduction value increases tenfold
Omnific Damage Reduction (Omnific) (Ex)
Prerequisites: Transcendental Damage Reduction
Benefit: Your damage reduction becomes ∞/-
This is good.
This is good too.
Specify that is countered with (Infinite) to damage and you count as your former DR after the Infinite is negated.
I'm not sure what you mean for the last one. Do you mean if you get hit for infinite damage you still take infinite damage despite your dr? I was thinking that's how it would work, however, it would provide another thing that would have to be abrogated along with omnific toughness and infinite con