Until mid-season 2, I thought that Ian McDiarmid was voicing Palpatine. I think that says something about the quality of Abercrombie's voice work. I would say that Children of the Force and The Zillo Beast Strikes Back were his two highlight shows.
I suppose this opens the door for Sam Witwer to take over. His Emperor Palpatine is very good. I wonder how his Chancellor Palpatine sounds?