Exactly, Wyrm. Though I still have to say that if I were a bunch of dragons trying to make the young races into obedient cattle, I would go with a combo of genetic manipulation, information control, and propoganda. None of the flashy stuff, mind you. More subtle methods. Afterall, most metahumans can't track a plan that lasts more than a year or so, but for a plan spanning decades, perhaps even a century, then many minor changes can add up to major changes over time, and no one would notice until it is too late. Essentially the genetic equivalent of what Lex Luthor did in one of the Superman movies, taking that fraction of a penny from every financial transaction run over the computers, and shunting it into a bank account. Oh sure, a fraction of a penny isn't much, but when you start to add it up over time...
Remember, dragons play the long game. Not just a few weeks or months. They can spend years, decades even, on revenge, as they just showed, and their plans can stretch even further.