I'd love to see what Kivan has been up to.
One of the recurring themes running in the background throughout BG I, II, and ToB related to the History of the Fateful Coin. If your coin lands on edge, then not even the powers can direct your fate. I always liked that idea, and it would be a great way to make BG III a thematic successor without having anything to do with Bhaal. I believe Narlen Darkwalk was another character whose fate was in his own hands ...