The Klingons look much better on the movie screen than they do in the screen caps. The ridges look very subtle and the piercings look like they are meant to make the subtler ridges look more fierce. The costumes are a nod to the TOS costumes. I can buy the ridges in STID as a midway point between the Klingons suffering from the augment virus, and TNG - we have seen other Klingons before who were nearly ridgeless (like General Chang) and still bought them as Klingons.
There is more to a successful portrayal of something, than just how it looks; that's only one part. Most importantly they FELT Klingon.