What other avenues can we pursue for getting a little more Dooku in TPM?
Make Dooku a hologram throghout most of the movie and have him completely replace Palpatine role?
I always had this this idea that the Confederacy is created aboard Nute Gunray’s flagship over Naboo with the only time Dooku appearing in person with his own ship arriving - it can be either at the very beginning of the movie coinciding with the Jedi arrival (but then you’d have a consistency problem of why he’s a hologram if he’s on board) or after the occupation of the planet. You have the main antagonist faction established, and a serious threat with a powerful, charming leader, already in the first movie. Would require altering the Geonosian meeting room set to a ship one, though.
Then if you keep the meeting scene between Dooku and Palpatine at the end of AotC it’s actually a twist and way more powerful one. Your supposed main vilian was a puppet all along and the true bad guy is none other than the Chancellor himself!
Anyway, if he’s in as a (small) hologram in several scenes in TPM, I guess it should be more easier to disguise any editing, rotoscoping, cropping etc.