I'm considering implementing a 'Damage Save' system, but I have no idea as to it's similarity with M&M (I don't have it). Basically, save DC is 10 + 1/2 damage die + damage modifiers, character makes save, if they succeed, they lose 1 wound Level, if they fail, they lose 1 Wound Level and repeat the save. Characters have 6 base wound levels, plus a few for class, level, and the Toughness feat, and then the Disabled, Unconcious, Dying, and Dead levels. Armor provides a bonus to saves equal to 1/2 it's bonus to AC (and I'd use a Class Bonus to AC that doesn't stack w/ armor). This isn't for a high fantasy setting; a DC 40 fireball would be almost impossable for even a 20th level character who has put 1,000s of gold into Fortitude and Con enhancements.