How could have BATMAN V SUPERMAN : DAWN OF JUSTICE been a better movie?

WARNING! SPOILERS AHEAD!

The fight in the movie between Batman and Superman was only 10 minutes. It should have been at least 51 minutes long.

The movie should have replaced that Batman's "Future Dream Sequence" with a confirmed Future such as November 16, 2017 (Justice League Pt.1's release).

I imagine the backround like in the recent Earth 2 storyline.
https://www.youtube.com/watch?v=dVmhu03ieVw&list=PL6FhCd_HO_AAabLtJi45q422-viAsYy5d.

The movie should show The Flash Of The Future time-traveling to tell other members of The Justice League. This would be a great set up for the next movies.

If Batman must have a nightmare in this movie, he should have a nightmare of Robin's Death (maybe confirm which one died).

There should be more Cyborg footage. An example of this could be for his accident to be recorded and there should be an adaptation of Victor Stone's transformation into a Cyborg.

Aquaman's scene should have him doing something more than teasing at cameras : such as fighting a Gigantic Sea-Monster.

The Flash in the footage (shouldn't have a ponytail) should be in his original scarlet costume stopping a super-villain such as Suicide Squad's Captain Boomerang.

She's awesome. No changes are really needed. However, she shouldn't be doing all the work fighting Doomsday.

The movie did kill Jimmy Olsen in that Africa scene with Lois Lane in the beginning of the movie. However, the movie should have kept Jimmy Olsen around as some comedy relief because some people felt that the movie was too dark.

In the movie, Lex Luthor acts too much like the Joker. He needs to be like an evil version of Batman that's seen the world as an even more dark place. He could be referred as a brainiac.

I'm okay with him tricking Superman and Batman to fight. It makes sense for him to also create Doomsday (I'll get to that).

However, I think he needs to be less comedy. He should also be bald. Because they changed this character's personality too much, I almost thought it wasn't even Lex Luthor - but it was Alexander Luthor. On the other hand, you can't make Lex Luthor too dark. He's a genius that's jealous of the god-like superman. That's how simple it should be in the movie.

When he's looking at Kryptonian Archives, the archives should have mentioned Lantern Corps, New Gods, Mother-Boxes, and the Multiverse. It would have made a great setup for DC movies in the near future.

Batman shouldn't kill people. It's not because killing is really bad (which it is), but it's because it's against character. Batman is someone who doesn't kill people. He doesn't want to turn into the person who killed his parents. If they still want a very violent Batman, he should just kick the criminals' butts hard.

Batman is too dark. I personally don't think this should be the case. If anything, he'd be happy. He may be the "Dark Knight," but I think he's the Knight who fights in the Dark. He's the only thing keeping his city a good place. He shouldn't be branding villains. He doesn't hate villains. He just doesn't like him. The only villain he should hate is the one who murdered his villains.

Why does Superman have a problem saving people? It makes absolutely no sense. He needs to save more people, stop that stupid bomb from going off (X-ray vision), and just smile at the camera more.

If he wants Batman to stop, he should say "Lex set you up!"

When talking to Wonder Woman towards the end of the movie, Batman should say that, "We need to prepare for the future threat. We need an army. We need to get these meta-humans before Darkseid."

Doomsday's origin is okay but not his looks. He needs more bones covered on him. He should start in a containment suit like in the comics. And, as the trinity hits him more, he should rip through his containment suit. He should heal with sharp bones in the places of where he has been injured. They shouldn't kill Doomsday. In the comics, Doomsday never dies. It should be the same in the movies. This is a monster that can never die. Doomsday should be kept in some type of prison.

The movie shouldn't tease anything about Superman's rebirth. Especially, not with a stupid pile of dirt floating. If there has to be some tease, it should be Lois Lane saying something such as, "No, he can't be dead! He's my Superman! There must always be a Man Of Steel! He has to be alive! He has to-" and then cry.

Darkseid should find out that Superman's dead. He should smile and then say that, "Apokolips shall invade this Earth!"