I have actually grown to appreciate Dookus character more than Maul by a long shot. Dooku is somewhat of foreshadowing to the possible issues Anakin takes up with the order. I find rotoscoping his saber green or purple and removing the Darth Tyranus title would seal the deal for Dookus character really put to perfection as a intellectual rebellious Jedi who has noble goals with dark logistics of doing so. Figuring out a way to put Dooku in the funeral sounds very difficult but if executed correctly, I believe that would be absolutely fantastic. You have some great ideas for his edit!