Major Ramm wrote:
Ok I have been researching for some time and I have come up with a theory:
The canon is that Revan left to look for the true sith. He went there and then the jedi Exile followed him. 300 years later the sith return with a mysterious emperor leading them. Could Revan not have made himself emperor? In a second attempt to help the republic? Remember he only started the Jedi Civil war to HELP the republic in the long run. Any thoughts?
You're mixing the story up a little. Revan gathered a large number of Jedi followers and led them and the Republic military to victory in the Mandalorian Wars. He then turned to the Dark Side, discovered the Star Forge, and came back to conquer the Republic, not to help it.
After KOTOR, Revan went to find the original Sith Empire, which had been hiding and rebuilding itself to take on the Republic once again. 300 years later, the Sith Empire comes back and drops a can of whoop-a#@ on the Republic.
"Do a barrel roll!" Peppy Hare.