Of course bad things can be made. I just simply don't agree with the 'issues' you guys have brought up.
I literally just discussed the many problems the film has. Them being primarily cinematic issues such as pacing, dialog, etc. These are the problems discussed by actual respected film critics. And they are problems that certainly are warranted and need addressing. Another issue is many younger "critics" who complain about minutia without an actual understanding of storytelling. If they were to judge most great movies that way, there wouldn't be many great movies. ****, you can find these kinds of small problems that 'don't make sense' in great movies from Godfather to Apocalypse Now to Raging Bull. And it's not the small problems that make them great, it's the story and execution. What's lacking from MOS is most of all execution.
And this is getting ridiculous, but you show a very narrowminded view of how the 65% drop was achieved - it's pretty much standard when it's followed by two movies that pulled much of their audience the following weekend - Monsters U (kids), and World war Z (teen and young men). it grossing 650 mil over the long terms after such a drop is actually an example of GOOD word of mouth. But I digress. I don't think any of us is really enjoying this conversation, which is the reason we should be here to begin with. It would be more fun if we had more people's opinions on the matter, but right now it's like four people running in circles, lol.
A productive conversation would be to acknowledge the strengths and failings of MoS, and to discuss how these realities should or should not affect the sequel, also, how the failings could have been prevented and would have made for a better movie.
This is hard to do if people start off assuming that MoS has no serious imperfections. The fact Jor-El beat up Zod would be forgiven and forgotten in an otherwise great film, but not in this film. The fact people apologise for it here demonstrates their irrationality.
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Anyway, here's an attempt.
1) No codex. The reason Zod searches the Galaxy is to find Kryptonian life, and he comes to Earth because of the Kryptonian distress signal. They decide to colonize Earth because it's one of the few planets that can be terraformed... it's plausible that very few planets in the Galaxy would be amenable to the world builder, particularly if the world builder is damaged or low on power.
The screen time that was wasted on Jor-El/Tarzan stealing the codex is transferred to dialogue scenes between Jor-El and Lara, or between Jor-El and the council, or even to Earth-related events. This also liberates screentime further in the movie for when the Kryptonians again talk about the codex and how it's in Kal-El's cells.
Goyer wanted to establish an antagonism between Zod and Jor-El, so that the Zod / Kal-El antagonism would have more meaning. OK, have Zod attack Jor-El's compound becase he's heard that Jor-El has been developing technologies that can change the tide of the war, which takes the exact same amount of screen time as searching for the almighty codex. It's also correct and organically integrated into the plot: Jor-El has invented the phantom drive, and that can improve transportation between Krypton and its mining outposts. Zod easily kills Jor-El as Jor-El pleads, the baby flies off as in the movie.
Zod wins the civil war, he never gets sent to the phantom zone. He proceeds to rule Krypton from orbit and he shoots down ships trying to escape his blockade ... and then he sees his planet blown up. Or, he loses the civil war and goes to the phantom zone in a *****, whatever.
So, the net change of all this, is a bit of screentime liberated, and also no codex. Zod has had more victories and is more menacing. As engineers say, Keep it Simple Stupid.
ETA:
2) The Brain-USB. Simple: No Brain-USB. Clark instead gets a simple recorded message of love from Lara and Jor-El, as well as a history of what happened. They tell him something like they hope he becomes an ambassador for a fallen civilisation, and they give him the suit.
Thus, instead of Clark becoming a hero because Jor-El tells him it's his destiny to become a hero, he chooses what to do, without instructions from Jor-El and Lara.
This requires a major re-write of the script. Jor-El was needed as a brain USB because in Goyer's script he fixes every problem -- Jor-El is the greatest hero of Goyer's MoS. He helps Lois and Clark escape from the Kryptonian ship, and without his help they would have died there and Earth would have been destroyed. He also tells Lois to use the phantom drive to defeat the Kryptonians, without that Earth would have been terraformed.
An alternative would be to have Clark spend some time reading the Fortress of Solitude's computer and learning about the phantom zone. The end result is exactly the same as Brain-USB telling him what to do. For the Kryptonian ship, have Lois and Clark escape due to their own abilities, or due to a conscientious objector among the Kryptonians. Either one is good, I'd prefer if Lois had arranged the escape of her own agency rather than Jor-El telling her what to do.
*****
And therein lies my biggest fear for BvS. Goyer will come up with an extremely complex script, involving various technologies and gadgets... Batman and Superman will fight each other, then team up to fight other villain(s) ... oh no.