True, but it would somewhat clash with other themes present throughout the story not to mention it would create many, many plot holes.
Which themes does it clash with, exactly? The themes of whether or not Veidt's actions were right and wrong, justified, etc, don't change at all. He just wouldn't be alive at the end.
Perhaps most obvious of which would be something Veidt himself brings up (I believe), in that if he's murdered people would surely investigate, find out that he was behind the squid, and his plan would fail miserably.
Or maybe when he went missing, since he left behind a datebook saying he had gone to Karnak, people would just think he took a vacation to Karnak, until the truth came out, at which point it would be irrelevant. People would find out he's behind the events of WATCHMEN anyway, due to Rorschach's journal entries. Veidt's death gives Dr. Manhattan's "Nothing ever ends" additional meaning.
Add to that what Veidt/Dan's confrontation/death does for Dan and Veidt's interactions as characters. A substory in WATCHMEN script has been the friendships and relationships the group once had, their dissolution and later on, as the story progressed, their regrowth, or re-examination. This provides yet another angle to that. Veidt dying actually, in context, makes the story deeper and the script and characterization and character interactions and relationships even stronger. Writers haven't been stupid enough just to kill him off with no payoff. David Hayter deserves a lot of credit for this, for introducing the scene where Dan visits Veidt instead of Rorschach, and further developing their relationship throughout the script.
Also, this event enhances Dan's "struggle" and "conflict" over what it means to be a hero. During WATCHMEN, when faced with such a monumental decision, Dreiberg STRUGGLES with whether or not to tell the world. This angle enhances that element of the story. And you know what, when you think about it, it's just more realistic overall. It fits Veidt's character more, in a lot of ways. This man killed The Comedian. He killed dozens of relative innocents in building his plan, and in the most recent drafts, millions of relative innocents all over the world. And we're to believe he wouldn't kill his friends and former allies to keep his Utopia and save the world? He'd be a fool not to.a
If Veidt dies at the end so does the movie.
That is simply not true. This is just the outlook that people who haven't fully considered the events implications in literary terms have stuck with because it's a "change" to a beloved element of WATCHMEN.
By the way, am I alone in seeing Veidt as the actual hero of the story? Everyone seems to treat him as the offical villain of Watchmen.
There are no heroes in WATCHMEN. Everyone screws up, and everyone is flawed in some way, in the context of "being a hero". This is half the point of the characterizations in the graphic novel.
In essence, it wouldn't, but his death in the scripts was always written as a cliched Bond-villain death, which would kind of paint him as a cliched Bond-villain.
There are obvious elements of serial (Bond villain) to Adrian Veidt already. I don't see how this is an issue. Either you're smart enough to reason out the elements the character has, despite what the movie shows you, or you're not.
Consider this, why would they kill him off?
1. The obvious morality aspect, which doesn't negate the issues surrounding his actions.
2. To strengthen the drama, and to make the nature of the schism between Dan and Veidt, which every script has played up more than the original graphic novel, more weighty and relevant. Veidt and Dan were good friends in every recent draft, and the schism is a big deal, an additional emotional angle to the story.
3. To make the impact of finding of Rorschach's journal even more telling. Despite Dan's "heroic" actions to kill Veidt, all was for naught. It speaks volumes about the nature of heroism.
Yeah, there's a bit of a morality play there, but so what? We all know there are still relevant issues surrounding Veidt's actions, and that his actions can be argued. Other than the fact that it's not in the graphic novel, so what?