This is my hope for the new movies. I don't know the plot of the new one, but imo this is the best
Superman - Enemy: Lex Luthor. A great start, obviously.
Superman II: - Lex Luthor, Commander Zod
Superman III: - Doomsday/Death
That is if you are going the releastic route, I still think that a 'Doomsday' could be pulled off as gritty and realistic. I mean, Batman Dark Knight pulled it off with Joker and Scarecrow.
Commander Zod already has a perfect actor.
IMO, I think the death of Superman in comics was mishandled. Basically if I had to write the death and return of an iconic hero i'd make their Resurrection 'costly'. If you read the Superman aftermath, after his death, it was the 'Supermen'. Aka nonsense. Then for no reason he comes back from sleep. Fuck that. I wish they showed that its not just "Dude, I died.... not!" its a journey, sacrifice to bring someone back. The impossible made possible.
The problem with doing a Superman movie is that most of the character is his powers and those powers that were once unique and 'super cool' are not dated and overused. Lots of characters have Superman like powers. I think that makes Superman a 'hallow' character to most.
I sure hope none of the movie studios play the death/Resurrection with shit reason card.