Actually, having lines in the Jedi Council such as:
"In the face of this new Sith threat, what will Master Yoda do?"
"Return, Yoda will, when the time is right."
That way there's a bit of repetition and theme.
Of course I also would have had Anakin be 30ish in the prequels, make Dooku & co. actually lightside in intent but destroying the Republic in their attempt to destroy the Sith, and have a Kreia-esque character be the one who has revived the Sith tradition and Palpatine betrayed her to become Emporer. Thus adding in an anti-Yoda teaching character who leads Anakin to the darkside in a subtler manner, especially if he forsakes the force for love and has to relearn it to fight Dooku.
The trick is, you need to make the darkside appealing to even the audience. So the whole "freedom comes through power, power from passions" teachings being pounded in the prequels then comes to fruition when Palpatine finishes twisting Anakin. By also having internal Jedi politics and ineptness/inaction the audience also roots for Anakin and the Emporer (on a deeper level then "evil is cool") up until the last second where they realise that they too have been led down the dark path
...plus Dooku being a contrast to the Jedi sitting and doing nothing would work well. Then there's the question- which is more evil, trying to stop evil but causing it yourself in the process? Or doing nothing?
