Originally Posted by
jphamlore
I really think we have already been shown all the clues we need to deduce who is behind the current change in Thor's status. We just have to observe that Marvel and Disney seem to have fairly decent coordination of books and movies these days. For example, Jason Aaron and Al Ewing seem to be working well together telling a coherent story, and Aaron appears to be using certain elements from the Thor movies such as Malekith.
We know that the All-Mothers decided to acquire some manifestation of an alternate future Loki. I assert we know that an alternate future Loki is saying that if the present follows his advice there will be a future golden age of Asgard(ia). We have seen Aaron and Ewing using alternate future Loki as trying to manipulate the present to his future advantage. And in the movies, Loki has been shown to have used deception to have maneuvered himself into a position of great power.
Future alternate Loki(s) have been shown to have motive, the opportunity, and the means to be the one(s) manipulating current events. At least one of them had ability to communicate with the All-Mothers. I conjecture he made certain predictions to the All-Mothers that turned out to be true such as the rediscovery of the Tenth Realm and told them they must follow a certain path to avert disaster from the attack by Malekith.
I also conjecture current developments in Thor are related to an agreement Natalie Portman has with Disney that if there is a Thor 3 she will feature prominently if not be the dominant character in that movie. That is why I think it is Jane Foster who must attain the power of Thor.