It is a bit convoluted, maybe even a bit confusing. It also only manages to save only half of the secret: in this version, we already know that Anakin went bad, just not that he survived and became Darth Vader.
I think in order for the prequels to fully work, all OT secrets have to be preserved. It's clear when watching Empire Strikes Back that the viewer, not just Luke, was meant to be surprised at Vader's revelation.
Treating Anakin as Vader as common knowledge in the prequels ruins the structure of the saga, even more so for newcomers. The prequels never should've tried to be prequels in the first place because they're not. They're parts I, II and III of a 6- part saga, they're the first half of a full movie, the first half of the Sixth sense doesn't ruin the second part, it sets it up.
Still, Dorkman's version is interesting when seen in the context of the entire saga, since it actually changes the revealtion in V. But I'm really going off-topic now, so I should probably shut up or maybe we can take this conversation to PM?
About your Airbender script: I might actually read it then, though I was planning to give the series a watch in the near future...