Fan Casting Immortal DC Universe

Imagine a world where actors and actresses never died and could reset or jump forward to whatever age they wanted, whenever they wanted. In this hypothetical world, who should be the cast of DC comics movies? Any actors, dead or living, old or young, are allowed as long as you believe that at some point in their lifetime, they could have been, or will be, a good choice for a particular role in a DC film. Actors who are or were in the DC Universe are not allowed for the roles they already play, but they can be nominated for other roles they could have played at a different age.