The Overlord wrote:
I think the show needed a character with an arc, so having Seven on made sense, but it would have been nice to keep Kes as well.
I always thought Tom Paris had a real arc; he does some serious growing up between seasons 1, 2, 5 and 6/7.
Kes had a couple of spots that could have been an arc, but were never connected.
7/9 had two arcs, both well ... enhanced and supported.