Here is one way I like to describe the Sidereal Exalted to people who know nothing about them.
You know all the stories about the CIA in the 50's and 60's? The really fucking paranoid ones, that is. Like, the government is really controlled entirely by the CIA, and a secret cabal of agents manipulates every aspect of the country. They rig elections and engineer events and discredit or assassinate anyone who gets in their way. Stuff like that.
Now imagine all the most paranoid, crazy things you can imagine about the CIA are true. On top of that, all the agents know kung fu. Super-badass, kill-you-with-a-glance kung fu. And magic. Oh yeah, and they can manipulate the fates of mortals. And instead of just one big country, they control the entire goddamn world and make their headquarters in Heaven.