To be blunt, I think you’re trolling us.
Not this again. I got the same response when I proposed remaking the First and Second Doctor adventures from Doctor Who. Granted, in retrospective, it was a pretty terrible idea, but still.
Anyway, back to SW, I guess if you think ghosts can shapeshift, that’s fine. There’s no way I can prove otherwise. I guess if we’re just seeing what Luke sees based on his own expectations, he could’ve been what Luke figured Anakin looked like before the lava incident. However, I find it hard to believe Luke would never have seen actual pictures of him, so him just looking the way Luke expects would actually make Hayden an even more appropriate choice, since Luke would probably be oblivious to all the Tuskens, younglings, and other people he killed in that form.