One of the things I've long wondered is what the true nature of a soul is in Azeroth. We know that beings that pass go to the Shadowlands where the Arbiter sends them to a specific afterlife. Yet, we've also seen that the soul of a being can be removed & separated while still keeping them around. Uther was able to go to the Shadowlands even though his soul was around.
What if souls on Azeroth are built of all of the cosmic forces which are then split amongst the various forces once they die? That is, we've seen the anima portion of Ursoc fade away, but might there also be a portion of him that is in the 'Domain of Life' as well, just in a different form?