In a lot of school, you have tests and exams (or whatever you may call it where you are) right now. Every student might just be studying hard (plus Chaos works as well) and concentrate on that. I don't worry. Especially since it seemed that before we got a few little things organize, we seemed not to get very far. They'll be back.
This is what I mean. In MB2, when Elend is attacked and wounded by the Mist Spirit, Brandon specifies that Elend's blood was flowing into the liquid metal lake and WAS NOT mixing. If he specified it, there must be a reason. Now, when the liquid got into Vin, it could not possibly just got in her or else she would have exploded. What I think is that it... what's the word... became one with her whole being, therefore her blood and the metal mixed perfectly, even that the liquid metal became her very blood.
Now, when Alendi was in the same position, filled with awe with the power and looking at a future, Rashek should have been able to "surprise" him. Now, I am not saying that is what happened, only rambling. But, what would happen if Rashek would have killed Alendi right at this moment, when both blood and liquid metal are one ? Would that not be a perfect mix to create someone with a power so great and "natural" ? Otherwise, if you need a blood bath to be able to use hemalurgic power, would that not be the very best one ?