Thing is, does it really need to be a time loop? A practical joker having MANY alarm clocks waking Anakin up before each of his actions, helping him reach that level of madness required to become a true sith. My line of thinking went something like waking up before the council scene, opera scene, Palpy's confession scene, killing Mace scene, attacking Jedi temple scene and finally before going to Mustafar. And that whole massacre could be accompanied by the Polka- growing silent by each person Anakin kills. So when he wakes up after being put in the suit the timing should be something like we hear the different radio voices when we see Palpatines wicked smile while Vader starts heading towards that Noooo.
Had these ideas just stuck in my head so I had to let them out.
What ever you do Frink- I'm looking forward to the end result. Might just take a look at the earlier ones this weekend....and most likely Groundhog Day ;)
Cheers!