Oh, right. One possibly-important addendum: While I would, in games I was running, allow strength powers to add to breath weapon damage, I would never assume that was going to work in a game run by someone else. Ask about it, sure, but I wouldn't be bothered if they decided to rule differently. (Though I would, in that case, avoid taking both breath weapon and strength powers, no matter how thematically appropriate the combination might be. Theme's nice, but so's mechanical effectiveness, and it's easy enough to justify, say, channeling, or maybe even an outright sponsored magic instead of breath weapon.)