How the hell...
How the literal hell did Revan or Exar Kun's Sith Empire not find Vitiate's Empire?
Korriban is literally only two ****ing systems away from the capital Dromund Kaas.
And I'm going to assume other worlds under Vitiate's Empire is nearby as well.
Then we got ****ing Malachor, which is in the same sector as Nathema.
Seems like terrible writing on BioWare's past to put Vitiate's Empire literally within Revan's.