SilverWook said:

Anchorhead said:

For the record; He only works in Rogue One. Completely unnecessary in the ST.

Anakin would be Vader already though?

Maybe he could appear as a hologram (the design for the Death Star was around during the Clone War period) or he could appear under heavy makeup during one of those rare meditation chamber scenes.

I rather liked the bit in Shadows of the Empire (the novel) where Vader removes much of his armour and continues to try to use the Force to heal himself in vain.