So in the integrating the two trilogies thread I had posted this

"For RotS, I'd like Anakin to confront the Emporer/Sidious alone, and end with him being shot by Sidious lightning. "Do not underestimate the powers of the Emperor or suffer your fathers fate you will" This would be the last time we see Hayden as Anakin (thank God!) - Would be good if when Mace is about to Kill Sidious, Vader in suit chops his hand off, think that would be a great reveal moment, of Vader coming about. Would also love to see more of Vader hunting the Jedi down... Then have Vader invading the Jedi Temple in suit, then also fighting Obi-Wan on Mustafar with Vader in suit. Not sure if any of that is possible, but I can dream :-p. I think the former also solves the whole shock reveal thing of Vader being Anakin. No Padme dying either... For obvious reasons".

However this got my thinking, in relation to another idea in this thread... Split personalities. However instead of split personalities...

Either somewhere in AotC... or RotS credits start with reference to the Chancellor having a personal warrior called Vader working for the Republic to combat the Separatists... Vader is rumoured to be an ex-Jedi. The not exactly possible part would be possibly seeing Vader engaging in combat at some point... Obviously when Anakin isn't doing anything, as they are one and the same, but would be a shock. A bit like say Bruce Wayne and Batman, you never see them together. (and yes I know; how this would be done, or if's possible I don't know).