What I always found odd about Star Wars 1 was that Vader was really only a third-rank public servant - subject to the orders of Grand Moff Tarkin, for god's sake, placing him at about the level of Moff, or even Lieutenant-Moff. The use of the Force to subdue opposition in a staff meeting is all very well, but if he'd actually had a senior post in the Death Star Hierarchy Vader could just have drawn everybody's attention to the coming round of promotion evaluations and got unanimous nods. What's the point of being right-hand man to the Emperor, with back-channel access, if you can't even ram through your policies without argument? Dick Cheney didn't make the mistake of relying on his lightsaber skills to get into a position to destroy planets. Well, nations, but it's on the spectrum.