Am I off base by saying that I'm just not a big fan of this guy's work in general? Many of the reviews for the recent Spider-Man flick say the plot's pretty much a mess. This is the same guy who scripted Legend of Zorro, Cowboys and Aliens, and Transformers 1 and 2. And yet he wants now to take more control of Trek. I don't know why this guy gets such a free pass in this industry.
The thing is, writers in feature films are not free agents; they're usually just doing what the directors instruct them to do. The onscreen writing credits on a feature film are usually just the tip of the iceberg; a script credited to one or two writers is more likely to be a Frankensteinian hodgepodge of scenes from drafts by half a dozen or more different writers, most of them uncredited. (And sometimes most of the work is done by an uncredited writer.
Speed is credited solely to Graham Yost, because the basic story structure came from his script, but in fact almost every line of dialogue in the film was written by Joss Whedon.) The reason so many feature-film scripts are so messy and incoherent is because writers have exactly zero power to protect their ideas
unless they're also producing or directing, because it's the producers and directors who have the real power.
For example, if you look at the original film
Buffy the Vampire Slayer, written by Joss Whedon but directed by Fran Rubel Kuzui, it's a complete mess, because the director and cast (notably Donald Sutherland) were free to hack Whedon's script to bits and twist it in directions he never intended. It wasn't until Whedon turned BTVS into a television series, with himself as executive producer, that he was able to portray the character and her world the way he wanted and create something good. But now that Whedon is actually directing the films he writes, he has the power to protect his words and his vision.
Of the films you mention above, the only ones that Orci and Kurtzman produced, rather than simply writing, were
Cowboys and Aliens and Spidey 2. On the others, they were only writing, and that means they were hired to execute the directors' vision, period. For instance, on
Transformers 2, it was Michael Bay who constructed the "story" of that film (during the writers' strike) by deciding what action set pieces he wanted to build the film around, and Kurtzman & Orci were brought in after the strike simply to create connective plot tissue to tie those action sequences together. And then an entirely different writer, Ehren Kruger, was brought in to rewrite that script and add the "humor" (including the disturbing racial-stereotype characters). So Orci & Kurtzman had limited input into that script and absolutely no control over how it turned out.
From what I've seen of the process behind the past two Trek films, I think that Orci & Kurtzman's ideas have been undermined somewhat by the changes imposed by others like Abrams and Lindelof. I'd like to see what the result would be if they were actually able to control the process and get their own (relatively) unfiltered vision on the screen. Although, of course, Orci and Kurtzman are now going their separate ways where their film careers are concerned, so I guess it wouldn't be "their" work anymore.