I'm confused by the ''It showed way too much'' narrative.
With a decent of knowledge of the DC universe, Batman, Superman in combination with what happened in Man of Steel and Snyder/WB's vision, it was very obvious what the first, second and third act of the film was going to be about.
1st: MoS aftermath + establish Batman backstory
2nd: Batman v Superman
3rd: Lex is the true villain, WW brings Batman and Superman together.
So what exactly is new information some of you guys see in the trailer? Aside from the Doomsday reveal, which a lot people hypothesised anyway, there's nothing 'new' if you actually think about it.