ddvmor
I'm a little teapot!
With reference to the casting of Wayne Pygram as a Tarkin cameo at the end of RotS in this thread, I think he'd make a great Tarkin in an ongoing series if you didn't want to overuse Vader or the Emperor. Try watching him playing Scorpius in Farscape and then tell me he's not perfect... and I bet he's looking for just this sort of role nowadays, as well!