Valheru_84 said:

You have to ask yourself - why would Mark actually be happy about killing of the past, his past and a character he has been the active custodian of for 40 years and had to think of it as “Jake Skywalker” in order to play the part?

Um, this just popped into my head: what if a radical TLJ reedit had “Luke” actually be Luke’s previously unknown twin brother? Such a thing could easily explain his hiding-out and reluctance to train anyone. I know at first blush it sounds crazy, but . . . .