I've been thinking and experimenting with Yoda vs. Dooku, and I have found that it is possible that the confrontation might be powerful enough without any lightning or lightsabers- with the proper music.
Why are you so insistent on cutting the entire fight? If you want to save lightning to the final film of each trilogy, then it's understanstandable, but the Yoda-Douku fight is the best lightsaber fight in the film by far. It would be like cutting the Burly Brawl out of The Matrix Revolutions!