I'm not trying to be a rules lawyer, but I was scrolling in the character thread yesterday and something struck me as odd. On Nagi, the flaws for not affecting insulated characters struck me as extremely strange. Isn't insulated a power on the part of the defender (i.e., protection vs. electricity only)? That means that the flaw is exclude people that are already protected from the attack! While I must admit that, strictly by the rules, this implies someone with 1 rank of protection can negate 20 ranks of attack...but this still does not seem like an adequate limitation to constitute a flaw.
On another note, someone had asked whether or not flaws are inherited? I believe that they are. After all, if you have Armor that also provides for Super-Strength, the Super-Strength does not work if you don't have the Armor on. As to the question regarding the disparity between extras and flaws, my answer would be that's why you get a 1 pp/rank discount. After all, the only other disadvantage to chaining powers is drain/negation and that can be protected against by adding the inherent extra on the base power.
Please let me know what you guys think.