It will eventually go back to normal one of these days.
Just like how the bullet hole left Joker's face several years ago. We'll probably get some half ass explanation with it but it will happen eventually.
"Tt..You can't just build a boat and hope darkness magically sails away with it."
"Why not? It's my boat."
Yes absolutely, but there should be some serious scaring. I never liked the Joker's look in Dark Knight and was disappointed when they used it in the comics.
"It is wrong to assume that art needs the spectator in order to be. The film runs on without any eyes. The spectator cannot exist without it. It ensures his existence." -- James Douglas Morrison
The only difference between then and now is that then Jokers face was a part of him,now he can just remove that same face at will,so I personally see no difference.It's just a lazy stunt.
I'm probably going to be in the minority in this, but I would be okay if Joker gets time off. Namely because I think while he is a good villian, everyone has a joker story and there's so many good charcters that could be used and deserve a shot. I vote baby doll from TAS, seriously some sad tragic stuff there and you can push that in a way.