USS Kongo wrote:
It was really more than just replacing one character with another, it was a total shift in storytelling that changed the dynamics of the series--as many have said, it became the Janeway/Seven/Doctor show.
One wonders if Seven was treated the same by the writers as Kes, where all of the characters had equal time, would Seven still have been as effective?
I'm just thinking of the Voyager books, and in terms of adventures dealing with Kes, I think the authors of the books even added to Kes, even after she had left the show (the last Kes book in the numbered series was #15 Echoes from early 1998, which is kind of funny considering that, out of all the in-series books, the majority of the books take place within Seasons 1, 2 & 3, while only a few take place in the seasons with Seven).
But with Kes, I also like how they had her play off of Neelix and Tuvok and be the one who always brought the "alien" perspective into focus, like Spock or Data/Worf.