Can we get a consensus that Revan and the exile's fate were written for the sole purpose of marketing the very loose tie-in mmo? Their character arcs were pretty hastily undermined and brushed away for the purpose of introducing a new set of villains for The Old Republic. I don't see another interpretation unless you start grasping for straws.
"Everything I tell you is a lie. Every question I ask you is a trick. You will find no truth in me."
―Vergere to Jacen Solo