It would be funny if you did a "Sith Lord break" towards the end of this edit, like the "Werewolf break" in 'The Beast Must Die'...

https://www.youtube.com/watch?v=3i1faQGGFXE

"Have you guessed who the Sith Lord is yet? Is it Steve Grievous, Dexter Jettster, Palpatine etc etc... you have 30 seconds to give your answer"

It would hinge on somebody here or over on FE.org being willing and able to do a similar spooky Vincent Price-esque voiceover. Probaby placing it just before Anakin himself realises, would be funniest.