One of the things that I find very intriguing about the third Darth Bane novel is an aspect that some people would probably be inclined to find senseless or pointless but that I think was really a quite unusual and thoughtful narrative choice.  I actually unintentionally came up with a completely AU ending while I was reading the story which I also think would have worked well, but I was fascinated by how the story took me by surprise while being completely unsurprising in its resolution.