I don't understand the whole Klingon pronunciation thing. It's a fictional language spoken by a fictional species. The only persons who could discern good pronunciation would be native speakers; of whom there are none. But, assuming that the creator of the language would be the best judge, I hope that since he was involved in Zoe Saldana's coaching that he at least screened the pronunciation of the Klingon crew member during filming and during post-production.
This reminds me of an actual incident: When I was in the military stationed in Korea, I had a young friend who asked me to go downtown to help him to buy a type of blanket that was only found in Korea at the time. When I told him I was busy, he pleaded with me again; saying that he couldn't speak the language (I had a fair grasp on Korean at the time). I responded by saying that he should learn to speak some Korean. His response: "I can't learn that crap!"
This made me laugh. He spoke fluent Klingon. Presumably, he had to spend many hours mastering a fictional language that was probably spoken by less than a handful of people at the time but wouldn't devote 5 minutes to learn any portion of actual language spoken by about 100 million non-fictional, living, breathing persons who are actually walking the face of the Earth. As a ST fan myself, I was cool with the idea that someone would devote time to learning Klingon. I just thought it to be funny that someone would do so while eschewing the virtues and benefits of learning a real-world language.
I'm sure I'll get blasted by somebody on this board for saying that but it just seemed funny to me at the time...