I will give the final cut later, when I watch the first part again. and yes @drakos, you're right, Niander Wallace's role / story could have been expanded a bit more. it was really a little too short. Like role of the daughter of Rick Deckard. What will happen to hear? Will the replicants find her?...
I read an article about a 3rd part, in which Ridley Scott says, where he already thinks of a third part. I really hope he will produce it. because many questions are open.