I guess that makes sense. But what on earth is supposed to keep him there?
I highly recommend the Darth Vader comics Logos - this sort of thing happens between Vader and the Emperor near constantly.
Emperor constantly sends potential replacements to keep Vader on edge/try to kill him, Vader constantly calculating when he can move freely or against Palpy, Emperor rewarding Vader when he manages to disobey him successfully.
Vader thinks he can beat Palpy - but he does fear him.
Them Sith and their sithy sithness.
Other note - Saw the movie.
Thought the beginning was jarring and wasn't into the music.
Didn't find myself caring too much for the characters (except k2so) until real late in the movie.
Tarkin's face could have been fine if they didn't hold on it so long all the damn time and obscured it a little. Thought Leia's face looked great.
Thought the third act redeemed most of the complaints I had - it was around then that I quit noticing the music pulling me out of the movie too.
Overall I think it's a solid addition.
I was really happy to see the rebellion portrayed in many shades of gray instead of good guys are good guys bad guys are bad guys.
Vader is a force to be reckoned with and it was nice to see it on the big screen instead of just in Rebels or the comics.
I'd probably rank it 4th or 5th overall as far as movies go.
I'd like to see it again so I can look at it a bit more critically.