Oh man, you can already hear the echoes of the REEEEEEEEEEEEEEEEEEEEEEEE that timeline would produce lol.
Folks, have you actually seen James Earl Jones? The dude ain't exactly Wesley Snipes. Here's his twitter avatar:
He's not "High Yellow" but he's pretty far up there on the African-American gradient scale. Perhaps a shade above Obama.
Its hard to tell for certain of course, because us light-skinned negroes can vary depending on the light.
Makeup can make you look even whiter.
So yeah, audiences wouldn't be distracted or think "Lol Luke's mom cheated on Vader". He'd fit. Even the most eagle-eyed racists might be fooled until the credits.
Shit, Lucas should have done this. Mustafa would've knocked this out of the park. I think his voice work makes people sorta forget how got damned top shelf THULSA DOOM is as an actor. And it'd be far superior because
it'd really be Vader's voice as he wheezes and dies. Skywalker Sound would use a lighter compressor and a low cut filter on his voice once the helmet came off to complete the effect.
Dammit, I'm adding this to that perfect "Spielberg directs RotJ with Kashyyyk instead of Endor" timeline.