Considering this will start before, run parallel, and possibly end after ROTS, I wonder if this, alongside 2D CW’s ending, could be fanedited into a “4 hr cut” of Episode 3. The changes in animation wouldn’t be ideal, but you could get a massive and epic story taking place all at the same time.

Starts with Anakin fighting Trench or something to introduce the characters.
Ahsoka on Coruscant, shows the dislike for the Jedi by commoners and gets her to Mandalore.
Siege on Mandalore
Grevious surprise attack on Coruscant; Anakin and Obi-Wan sent to stop him.
Revenge of the Sith with Deleted Scenes running parallel to Ahsoka and Rex fighting Maul.
Order 66, however it goes down in TCW.