It just dawned on me that Vader’s confrontation with Ahsoka is only 7 years before RotJ. He ages a ton in those 7 years.
I think having the young, unscarred face behind the mask was an artistic license so that we get the emotional response we want from Ashoka.
probably. however that makes me wonder if we will get an ‘event’ that ages Vader at some point in this or another series. (unless there already is a cannon explanation that i don’t know or can’t think of right now)