Continuity: Throughout the series, the number of crewmen on Voyager has fluctuated despite the fact that several have died over the course of the series, and only around eight have been added. The number of the crew has been as few as 125 and as many as 160.
Plot holes: The way the Ocampa are shown to have offspring is an impossible situation. When Kes's body gets ready to have a child it is said the event only happens once in a female Ocampas life; the characters also spoke about preparing for "a child" not "some children". Kes has never mentioned having siblings and in flashbacks where she is a child she is not shown to have any. In the episode "Before and After" a possible future shows Kes and Tom Paris have a single daughter, Linnus who in turn has a single child, Andrew with Harry Kim. A species where the female can only have offspring at one event in her life and probably only a single birth would half in population every generation, if every single member had offspring. It would be impossible for a population of Ocampa to sustain itself, or even exist in the first place.