[quote name='Dark Wastl'
I can't see how Revan and the Exile wouldn't notice each other, they aren't some weak-minded fools.
Especially since Revan was already in the Sith's territory for four years, by that time you know who your enemy is. One shouldn't make the enemy artificially powerful by making the good guys stupid.
They wouldn't have to be stupid to not notice eachother. At the end of KotoR 2 it had been eight years since the Exile and Revan had seen eachother. Depending on when KotoR 3 starts off it could have several years more. At this point both Revan and the Exile are very incredibly different form who they were at the end of the mandalorian wars. The Exile is a rift in the force that would be unrecognizable to somone who hadn't seen him after the war. Depending on the endings for 1 Revan could be a powerful Sith Lord whose presence could feel incredibly different from his former self. Cut scenes that showed the Exile and Revan could show them cloaked or masked and the new PC could spend a great amount of the game unaware of whom they were.
As to the power of the enemy, you have to consider who these Sith are. These are the Sith that have a run an empire unnoticed and undetected for centuries. They would have to be far more hidden an subtle than Kreia and her minions ever were. They would have to be able to hide themselves from the force entirely to avoid detection by the Jedi during the thousand some odd years that went by between the Great Hyperspace War and the Mandalorian War. How Revan was even able to disvocer them is still in question. Going to the surface of a long uninhabited planet and finding an abandoned Sith Academy that contained powerful Sith teachings hardly suggests a thriving Sith Empire in unknown space to me.
Kreia suggested that the "True Sith" caused the Mandalorian war and thus the two wars that followed it, but how certain can we be of her truthfulness. She said that Revan found out about the "True Sith" and decided to unite the Republic through his darkness so that it could fight them off, but all of this is second hand knowledge. What if Kreia was wrong about everything Revan did. I don't recall her ever saying that she gained her information from Revan herself. Kreia was the sith "LORD of Betrayal" and it's not very hard for me to believe that at the end of 2 when she sees into the future and tells the Exile what he must do she might have been LYING. One last betrayal before she died. Telling the Exile that Revan went to fight an unknown evil in a distant galaxy could have been her sending her killer into a trap knowing that he would certianly follow his former leader into the bowels of hell if necessary. Everything that Kreia ever told the Exile about Revan could have been lies used to crate questions that only the Jedi masters who had exiled him could hope to answer. Her stories either led you to kill the masters yourself or to collect them on dantooine where she could kill them herslef. In the end it was doubt that killed Sion and it would be just like Kreia to use the Exiles doubts as a weapon against him. Let us not forget that Kreia's plan was to destroy the force, which would include killing the Sith, the Jedi, the Exile, and even Revan. Why would she choose to help anyone at all? I think that 3 will certainly see even more of Kriea's betrayals.