darklordoftech said:

Would replacing Moore and Amedda with the ROTJ advisors be preferable?

I don't see any pay off to this personally, as they are superficial background characters. In my opinion, they only serve to convey that the Emperor is surrounded by the pompous and the sycophantic.

He's not the Emperor yet in the prequels. He's still going through his machinations to power. Having them there at this point, in my opinion, would make no sense.

Again, what the Prequels need are compelling, developed characters. Not one dimensional cardboard cut outs that serve no real role. We have an abundance of those already!