Maybe the inspiration for the pasty goblins comes in part from real world cave creatures like the pigment-lacking cave salamanders?
One of the other things that struck me was having Azog and his party riding across open plains in broad daylight while they were pursuing Thorin's party near the entrance to Rivendell. I'd remembered Orcs not being terribly happy about being out under the sun, other than Uruk-hai and maybe a few of the strongest that joined them while they were trying to bring Merry and Pippin to Saruman in TTT. It seemed jarring to have that scene, but I'm not a big fan of the Azog side plot anyway.
I'm not very fond of the increased use of Orcish (from who knows where - there wasn't much dialogue that I can remember in the books to use as a source). I thought it was distracting to have so many shifts to subtitles. And am I remembering incorrectly, or was Azog speaking to Thorin in Orcish too?