I think it's certainly doable to preserve the revelation in ESB. The PT just needs to be cut to shreds to get rid of all the needless explanations. As well as to make Anakin more coherent with the good man he's made out to be by Obi Wan in the OT.

The changes I think need to be made:

Omit the name Skywalker
Cut Anakin's whininess/slimyness and generally being an asshole. Existing edits have already proved this is possible.
Make his turn more gradual and make it a seduction rather than a calculated decision. The way it is now is just awful.
No Vader in armour. The last we see of Anakin is being defeated on Mustafar.
Never have Padme tell Anakin about the baby. Never have the babies named and never see where they end up.