Harmy said:

I don't know, I never expected the prequels to be about anything else but it didn't need to be the sole focus - it may have been better as Obi-Wan's story, with the fall of Anakin as just a smaller part of that story.

It seems daft to me to make any of the OT characters the main focus for the PT.

Not only do we already know their fate (thus making the story redundant) it also adds nothing new of real value.

It would have made more sense to invent brand new characters have them the main focus and have the known story happen in the background with a few twists.