I definitely think Atreus’ anger issues are going to play a big role in the next game and it’s going to be a much darker one. It’s going to play in winter anyway. The moment he “turned” and insulted Sindri and the thunderstorm started was such a powerful moment. Thor, winter, a return of Loki’s negative or at least difficult characteristics...plus probably the already teased shape shifting abilities.
It’s going to be one hell of a game. I just hope Corey Barlog doesn’t jump ship like he wished to do before release.