I'd also like to have an apprentice in a new game. But a real proper apprentice, not completely turning him into a jedi in 5 minutes. But the throughout the game, teaching him, steering him etc having great influence over his actions. This would also work well if they did more of those split-party missions, your padawan leading one group, and you the other. They could take the learning thing really deep, like there would actually be challenges throughout the game and you have to decide if your padawan is experienced enough to undertake them. The time period doesn't really matter for me that much, I doubt there would be THAT much of a difference between KOTOR and KOTNR.