That's why I'm starting a boycott of the next Star Wars film, which you can support by adding your vote to www.change.org/boycott-star-wars-nose-scar-change. I've got our slogan narrowed down to three angry chants:
1) "BRIDGE OF THE NOSE or NOBODY GOES!"
2) "MOVING THE SCAR is GOING TOO FAR!"
3) "KYLO REN'S FACE was PERFECT AS-IS, SO STOP CHANGING s**t, YOU f*****g OVERLY MEDDLING DICKFUCKS. SERIOUSLY, f**k YOU AND YOUR STUPID FAMILIES FOR NOT TALKING YOU OUT OF IT, AND FOR BEING s****y FAMILIES / PEOPLE IN GENERAL! YEAH THAT'S RIGHT, I SAID f**k YOUR KIDS. WHY'D I BRING YOUR KIDS INTO THIS? BECAUSE f**k THEM, THAT'S WHY. The scar was fine." *Then 17 minutes of booing.*
Although I guess they could probably find a way to explain the moving scar within the story. Star Wars isn't technically science fiction -- it's fantasy. So there are fantastical elements that don't have to be explained with literal physics. But STILL, they can't just say "anything goes." Unless ... maybe the First Order has skilled surgeon-droids who can proficiently patch up human faces? Especially if that person's strong with the Force, which helps the healing? They can reattach hands pretty expertly. And Kylo Ren wears a mask anyway, so he wouldn't need to totally remove the scar -- just patch it up so it doesn't obstruct his breathing and keep reopening all the time. I guess ... yeah, then it would make some sense.