Well I don't want to see like that in done in TDK, the new franchise shouldn't be copying from Batman 89.
Well yes I don't want a shot-for-shot remake of "Batman 89' " like the "Psycho" remake, but I mean something along those lines. Either have Batman try to save him, push him, or he decides to escape by plunging over the railing into the vat of chemicals.
Then, once he gets out of the chemicals when someone asks him how he got the way he was he could just smile really big, "Multiple choice." Then they'd ask what do you mean he could either say society did it, Batman did it, or he just shoots the guy in the head.
But as I said before...
I want little pieces of his life like what they did with Bruce's past.
Show me him as a boy being abused by his drunk dad and living with a crack****e of a mom in a trailer park or rundown apartment.
Show him in college where he indulges and panders himself more into reading joke books and practicing his comedy act than he does with learning biochemistry and other required classes for his major.
Then, show him as a standup comedian doing terribly on stage. Show the audience walking out on him, booing him, and being disruptive. He goes home to his apartment and to his pregnant wife, and finds out he'll be thrown out on his butt soon because he got the last eviction notice and hasn't been paying his rent.
Show him hating his dead-end job at the Wayne Chemical Plant and hating the fact that his wife and the people at the comedy club don't appreciate his act.
Knowing he'll be thrown out soon and having to take care of a new mother to be, he does some jobs for the Falcones or Maronis. When his initiation comes to fully join the Falcones or Maronis, he dons a red ski mask and they nickname him the Red Hood, his wife dies (like in Alan Moore's book), and then he starts to want out of the mob. Falcone or Maroni finds this unacceptable and then pushes him into the chemical vat altering his hair, smile, and skin.
If Falcone or Maroni doesn't do it, then Batman interferes with the initiation, takes down Falcone's or Maroni's men, and then comes after The Red Hood. From there he realizes his only option is to jump into the vat of chemicals. When he gets out of the vat like I said if someone asks him how he got to be who he was he could simply tell them he was either pushed, thrown in, or "multiple choice."