4.) Assassin's Creed
Assassin's Creed is certainly a series people eagerly anticipate each time a new one comes out. However, it is quite worrisome if they decide to release one every single year but gamers seem happy for now.
We already know that there will be permanent exclusive content for Assassin's Creed IV on the PlayStation 4. While that's great and all, a full game and dedicated exclusivity is what's needed to sway gamers to Sony's side. It would make sense if they would seal the deal further down the line, but it would also be profitable for Microsoft as well.