Re: Did Voyager get better or worse when Kes was replaced with 7 of 9?
I don't think it's fair to say that a species that only lives 9 years can't evolve past primates. They would just need to develop social structures that are good at transferring knowledge. We can't assume that just because humans can't absorb a lot of knowledge in nine years that it's impossible with a specialized brain. We don't know under what conditions other species evolve.
Humans' fluid intelligence peaks at 13 yet we consider our prime to be the 20s. Why can't Ocampa fluid intelligence peak at 2? They wouldn't have the crystallized intelligence, but again, maybe their social structures compensated for that, and maybe they had shepherd races like the Caretaker to protect them.
Their structure of mating, glue on their hands, carrying their unborn on their backs and life span would make their genetics more similar to an insect such as a Mayfly.
A Tiger doesn't loose sleep over the opinion of sheep.