So I've done some reading of what people have (extensively) discussed about this topic. I read the entirety of a 96 page thread that was closed around a year ago because it became a toxic environment (There was also a google doc there that was good) and listened to a Shardcast about this. After all that, there's definitely nothing I have to add other than state what I found interesting about what's already been discussed. From all I read there, I think it that the subplot really isn't over because of all the loose ends and stuff I mentioned, I also agree with all the people who said the arc felt overall really unsatisfying if it ended here.
Anyway, I don't really feel there's more to talk about regarding this. (unless Sanderson said some things that might be more indicative of what's to come in the next book)