Night King's New Body? Jon Snow? Ice and Fire Endgame Theory

The evidence is accumulating - that's an accumulating Snow joke - the Others are going to come steal Jon's body, they're going to use him to lead their invasion of the Others... and they might be planning to fill it with the spirit of Night's King - the original one - who may be lurking in the weirwoodnet somewhere (this would be the Great Other). Detailed foreshadowing of all of this, right here!