The "Killer app" will likely not be something AAA, and it certainly will not be a VRisation of a current game imo. VR Elder scrolls sounds cool, but the actualities of the game mechanics, or sacrifices needed in order for it to work as a VR title will potentially hamper engagement, enjoyment, and even immersion. People keep on asking for VR "game x" thinking that by adding VR to their first person game of choice will be a win, but don't quite grasp just how much a game will need to change in order to allow for the VR itself. Controls, mechanics, menus, interactions, and even just the view itself don't just transition to VR. Its not like you can just fix the mouselook/analogue to head tracking and go. Its been tried and it causes all sorts of control and orientation issues, as well as some rather unfortunate real world problems (puking on yourself is likely not a feature people want in their games).
I'm not game designer, and certainly not smart enough to come up with what will work, but I know enough that its not a easy solution, and likely not just adding VR to an existing game type (except maybe something cockpit based).