Well, regarding Revan…
Spoiler
there's an excellent quest regarding the Revanites on Dromund Kaas. There's also a quest further on in the game regarding something called the
Infinite Engine that involved Revan.
If you've still got Knights of the Old Republic handy, now would be a good time to play through it again.
(I never played KotOR 2 so I wouldn't have known an Exile reference even if I saw one.)