While that's the the end result, we should remember that they were originally intended to be Romulans. So all of that honor, respect and the use of the Bird of Prey were not supposed to be Klingon aspects.
It may look in retrospect like it "began" here, but that's only because TNG's creators 2-3 years later used it as a retroactive precedent for what they began. From my perspective at the time, it didn't make Klingons seem any less treacherous to me. That's a later perspective coloring how it looks in retrospect.
Good points, both of you. I wasn't necessarily concerned whether it was the explicit intention of the filmmakers to "soften" the Klingons or not, just that this is where you can point to their portrayal starting to shift. (Though for whatever it's worth, they could've
very easily modified the scene so that Kruge and/or Valkris betray one another but they didn't-- also, I'm not sure this scene existed when the Romulans were villains; I don't recall it in the "Return to Genesis" treatment, at least)
I'll push back a little on how much I'm letting hindsight color how I read that scene, though. It's the Klingons' introduction in the movie, and the first thing we see (aside from their bitchin' invisible spaceship) is how devoted to the cause they are and their mutual affection for one another. I'll grant that the
second thing we see is their total backstabbing of the pirates they were working with, but hey, first impressions and all that.
Kruge also later vaporizes his gunner, sure, but it's out of Bond villain-esque "how dare you fail me" outrage rather than being treacherous. The Klingons here seem to
expect that they potentially pay for failure with their lives, so if nothing else, Kruge is at least honest about that aspect.
Come to think of it, between him and Kruge, it's
Kirk who is by far the more conniving and devious of the two, and is constantly bluffing and straight-up lying all throughout their encounter. Kruge even shows some annoyance at Kirk's slimy son-of-a-bitch ways ("No! Because you wish it!"), after Kruge had been ever so slightly magnanimous with him after having killed his son.
A LOT of this comes from Christopher Lloyd's performance, I admit; in the scripts Kruge comes off as much more of a bastard. But Lloyd gives Kruge a genuineness that ends up coloring the Klingons in this film, since he's about all we really see of them. He's ruthless but seems to have respect for certain rules of engagement, and I think that informs the "honor" of future Klingon portrayals.
I'd say "Day of the Dove" already achieved that 16 years earlier. Indeed, I don't think TOS ever portrayed the Klingons as "savage," but rather as cunning, devious, insidious political animals.
That was inadequate wording on my part. I had a hard time coming up with a quick and easy term for "strawman foil for the heroes by being bad and wrong at all times and in every circumstance."