If it had been up to me, the SW Saga would’ve consisted of twelve episodes instead of Lucas’ six, with the first five covering the prequel era.
- Episode I: Prelude to the Clone Wars. Roughly similar to TPM, though the baddies would’ve been the Mandalorians, not Neimoidians. Ben/Obi-Wan would’ve been the main character. No Anakin at all.
- Episode II-IV: Clone Wars trilogy. Anakin would’ve been introduced in Episode II, and he would’ve been the main character throughout the trilogy. My trilogy would’ve diverged considerably from Lucas’, though I would’ve keep Qui-Gon/Dooku (merged into a single character) as an antagonist. Anakin would’ve joined the Sith in Episode II, but he wouldn’t have become a bona fide darksider until towards the end of Episode III. He’d probably have lost a limb or two in a showdown with Obi-Wan, but he wouldn’t’ve been put into the suit at this point. The Jedi Purge wouldn’t have occurred yet either.
- Episode V: Interlude. The Jedi Purge would’ve now been underway, probably winding down. Anakin would’ve received a lot of damage over the years since Episode IV, accumulated many scars and bionics, and worn Vader-esque armour into battle, but he’d been more like Saw Gerrera, capable of breathing unassisted. Only at the end of this episode would he’ve become the Darth Vader we know in the OT.