I had to pause about half an hour in to do other stuff. I'll watch the rest later. My opinions so far ...
For me, the jury is still out on Brian Gross. So far, his performance just doesn't convince me that he's Jim Kirk. We'll see how that goes, but I'm not optimistic.
I'm sorry to say it, but Brandon Stacy is
not Spock. He doesn't look at all comfortable in the role, and quite frankly, looks to me like he could use more fiber in his diet. The wig is horrible, and the ears don't fit. It hurts me to watch him try to act as much as it looks like it hurts him.
Old Scotty looked the part, but that's about it. His presence didn't add anything to the story, but it was a nice gesture.
The Carol Marcus actress did a good job, so far as I've seen. She's the shining star of this one.
"Doc John" Kelley has done some nice work making the McCoy character his own. I think I've said it before, but you could put Corin Nemec in that wig and no one would know the difference.
I agree with above posts that the lighting and sound were wonky in spots. I expect better from this bunch.
I'll have more thoughts about the episode when I have a chance to finish watching.