Sheepish said:
And to address the notion of Dooku appearing out of nowhere…honestly, I think that’s part of his problem in Episode II anyway. He’s a villain that shows up out of nowhere and gives an expositional speech as to why he’s the new villain. I feel like if I can find a conceivable way to introduce him into Episode I, he’ll at least be a familiar face in II and we’ll have some notion of who he is. Actually, as I’m typing this out, I’m thinking showing him in the council would work really well. I’ll see what I can do.

In the beginning of the movie when Obi and QGJ are aboard the federation ship, Obi says “master Yoda said I should be mindful of the future.” Would it add anything to have him say master dooku? I think this change be used as foreshadowing for what about to happen over the next two movies between him and Obi? Plus, of course, we hear the name dooku early which helps establish continuity for his character.