Max lightwood: Do Not Kill Him
In the books CC has Sebastian kill Max to show that he is completely evil, and to give Izzy a reason to want Simon in her bed. Lets start with Sizzy, Simon will be spending the episode with Maia, and in the show is not the type to two time girls. Also death is a tragedy, not a starting point for a relationship. I have read stories where a character will have a one nightstand the week after a loved on dies, because they want to be held and to stop thinking for a bit. but CC is the only author I have ever read who tried to turn a funeral/mourning family into a place to find a girlfriend or the day after as a time to make a move.
Moving on to showing that Fake!Sebastian is completely evil. He has already done so many evil things, only the last of which was attack Max. Also when CC did that she thought Sebastian would appear in one book, be killed at the end, then stay dead. When she decided to make him the villain of the next half of the series and wanted people to think maybe he wasn’t/did not have to be all bad she made his death a miniscule thing. Luke or Jocelyn suggest that Maryse and Robert need time away from each other because they remind each other of their dead child? Nope they separated over an affair that happened Ten years ago, and is brought up Ten times more than the child who died two months ago. People barley mention Max. One time he was mentioned was by Jace (who we did not know yet was spelled) and Jace says that all the deaths in the war were just collateral damage, he trusts Sebastian completely. Another Time Clary tells Sebastian she can’t forgive him for that and he actually goes “It was just an accident. I only meant to knock him out. How was I supposed to know his head was that soft (he hit him with a hammer.). Any way I am different now, so it does not matter”. Max deserves better!
Hear is what I would like to see happen. We know that Izzy calls Caterina to come help Max. We know Caterina is a famously gifted healer, even among warlocks. I want her to save max’s life, but for him to not be 100% fixed. He suffers lasting damage and will never be a field soldier. Why do I want this? How could I ever wish something like that on a 12yr? Two reasons. One I do not want him to be pushed into the dark and forgotten. In season three for every time Sebastian tries to call himself a hero no one ever gives a chance, ever time we are supposed to pity him, I want to Max to be shown and for people to be reminded that he brutally and viciously attacked a child in cold blood, that this is no protagonist or even an anti-hero, but a villain who is evil. Secondly I think covering disabled people and how they aren’t able to do everything, but can definitely do great things and have important roles would be a great Arc for both Max to center and Shadowhunters to tackle. It was never talked in the books. A race of soldiers and permanent injuries are never mentioned. Max has “accidentally” used a fire rune in class, he hacked the schools simulator system, found hidden clues. He is actually MORE sneaky and troublesome than Jace freaking Herondale! Imagine him learning to create simulators, Imagine him setting up controlled emergences/crisis to test the skills and readiness of the institutes occupants. Think of the representation and possibilities!