So you didnt like the Affleck's batman character?
And what didn't you like about superman's character?
A house built on a bad foundation is a bad house. No amount of fancy brick or appliances will fix it.
I didn't have a problem with the way Affleck portrayed a grim, cynical Batman.
But the central conflict based on a cynical Batman who lets Leto Joker and Harley live, after killing a Robin, but must kill the Superman who is saving crews on boats, hurricane victims, and else without a word despite being on the other side of a river for both cities is.......
No investigation of what happened, just maybe he might be bad one day based on a nightmare is enough to kill him but nothing about the actual villains killing people. Terrible characterization.
The flash is getting cameo's in flashpoint because that's what the story requires, the flashpoint is a justice league movie, your suppose to get the atlantean war with the amazoneans, and bruce waynes father Tomas wayne as batman, and a area 54 lab rate superman who has no idea who is he really is.
Didn't the Flash tv show adapt the story with none of those elements? Just focusing on the character development of Barry Allen?
Civil War the movie is a pail imitation to the Earth spanning comic. Winter Soldier was a vast conspiracy by the Red Skull to reshape reality turned into a small government thriller. Adaptations don't have to use much if any of the elements from the comics.
It's not like the multiverse needs to be setup now. Give Barry a movie to world-build but they don't trust the character's ability to pull audiences on his own.