I no huge fan of Kes myself but she not so bad. This good episode, sad to see her go but done in a very nice way. She not dead so chance to come back is there.
You are right about that. It would be great to have her return in some book as the Kes we did see in seasons 1-3.
But when it comes to a Kes come-back, it has already happened: http://www.geocities.com/Hollywood/Park/1964/Kesstories.html
