I get the small universe aspect of it, but I loved the story and the caeliar so much that it didn't matter to me. I was so engaged in that trilogy that I read a good chunk of both books two and three before leaving Barnes and Noble.
For me as long as the story is very well done small universe syndrome doesn't bother me too much, and, not to diminish any of the other wonderful books and authors, that was, for me, the most engaging and interesting story in Star Trek for the last 20 years or more. And the caeliar have been my favorite aliens. I would love to see more of them. I can only imagine how they and their catoms would look with Discovery's budget.
Yeah. It was a great trilogy. Frankly it was the exact opposite of small universe in most ways. It was universe changing. And their origins might actually help explain the Borg fascination with humans