You know, I sort of like the look of the Klingons in the new film, but I also think canon should be respected and there should be consistency. If the Klingons are prominent in the next film, a two minute explanation about their appearance would be swell.
We're Star Trek
fans, we're suppose to be smart and imaginative. Isn't the explanation that all Klingons don't look alike good enough?
Heck, even an official explanation in a press release as to why the Klingons look as they do would be nice. It wouldn't have to be explained on screen. A documentary on the evolution of the appearance of Klingons would be sweet.