This might end up being a no-brainer, but do you prefer Kes or Seven of Nine?
Should they have kept Kes around for the full 7 seasons, and bring on Seven too?
I personally love Seven, and think it was a great idea to shuffle up the ailing show. I felt sorry for Jennifer Lien, but having Kes leave was a good choice. It would have been interesting to see how the series would have gone with Kes there in all seasons alongside Seven. I bet we wouldn't have had as much growth for the Doctor or the Doctor/Seven relationship.