Seriously. Whoever makes these DC movies needs to take a long look at Marvel. Start small - just get a group of actors / actresses who will play the same role for a fairly long period of time. Enough changing who plays Batman. People genuinely cared when Ironman died. No one will give two turds if Batman dies in the next movie. That would have been unfathomable to me as a kid.
What happens when marvel wants to bring back iron man but downey aint...down? The entire audience needs to get used to the revolving door of actors playing the role of an iconic character just like og comic fans had to get used to the tiny differences in their favorite characters between artists.
Either that or start using nothing but deep fakes, one or the other.
I'd rather go the recasting route than the "insert name of character here" is dead until the actor agrees to play the role again. I mean, for movies disney is pumping out a lot of stories but think about it from an outside view: iron man died after like...15 missions? You just cant get the same scope as the comics these movies are aping if you dont go for serial story telling over the course of decades and you cant have that with flaky actors and crazy legal contracts/obligations, at least not without that being more effort than it's worth.
Tldr: anyone with a pencil stash and an attitude can be tony stark. It needlessly balloons the cost of these movies when we cling to celebrities and even ends up limiting the story telling.