Let's make a list of what we want/expect from future DCEU movies.

Some ideas.

From Justice League:

1. I want Superman to dislike Batman for all the horrible things he said to him, beating him to a pulp, despite Batman becoming a better person, but in the end accepting Batman and becoming war buddies. And through forgiveness and seeing his positive effect becoming himself an ideal hero.

2. Some Silver Age Batman tech, and Batman channeling Superman's ideals.

3. Batman going from "No kill rule because of Superman" back to his own No-kill rule.

4. Alfred on a mission(Maybe it is too much).

5. Different Soundtrack.

From Batman movie:

1. Strict, obsessive "no-kill rule" if it is a prequel. So that we could have "Personal No-kill rule"=>"Fuck it" during BvS=>"No kill rule because of Superman", so basically having a deconstruction of a classic Batman, deconstruction of Miller's Batman, and reconstuction of JLA Batman.

2. Downer ending, maybe with the death of Robin.