Yeah, I fully agree. Dragons should be the one thing that would remain difficult even at later levels. They should also be immune to uber sneak attack bonuses and other such things that fell men easily. I also wouldn't mind if their breath weapon (shouts) overcame resistances at least partially. Now it's stupid that with the magic resistance and elemental resistance I can just walk straight through an ancient dragon's best flame breath and stick my sword into its nostril. And then to the other nostril and its dead.