This... can work. I myself thought that the astral plane could be that point where matter and (let's call it) "aether" fuse and thus it will make sense for the resurrection process to not be just a random act of replication/cloning... if it would've been a part of it. My problem is that the process as it is seems "too cold" or too technical. There's no "aether" in the process. It's all data and raw material.