I honestly find it odd to obsess over "why" the Klingons look differently. They just changed the design because they wanted to. It's not some complicated story because Klingons aren't real beings who are supposed to look a certain way. They're part of a show and the show wanted them to look differently. This isn't a historical drama, it's a scifi show. Just relax and accept it.
Can't we just talk about what the Klingons are doing?
Personally, I find canon/continuity arguments boring and pointless. There's nothing I hate more in terms of behavior on this forum than when I try to get in a discussion about whether element X worked, and people just parrot back what is seen on screen as an explanation. We can come up with any number of in-canon explanations for things, even though lots of Trek canon makes no sense (like all of the humanoid races interbreeding, for example).
What people really seem like they should be debating regarding this stuff is whether the elements make logical sense, not canon sense. In this particular case, whether the changes are so jarring that they break people's suspension of disbelief, and thus cause them to enjoy the story less.
FWIW, what the Klingons did in Season 1 made way, way less sense to me than what they looked like. I'd actually prefer their appearance isn't reconned yet again, except maybe to free up the face a bit more to be expressive (and fix the dental prosthetics so the lines don't all have to be overdubbed after the fact).
Last edited: