I have a couple ideas, actually....
1: Mech Mechanic.
2: A Good Story-Based VR Shooter.
Historically, these fall into the niche catergory; surely enjoyed by a few, but not creating statistically significant sales numbers.
3: An open-world RPG. Maybe synch it up to real-world props like chairs and such so that you can interact tangibly with them. But it has to be an RPG, in the sense of a role-playing game. More like Morrowind than Skyrim, for example.
4: Any city builder.
A new Skyrim would likely attract more customers than a new Morrowind. I'm not judging your preference, just saying that a slow talkative experience isn't going to sell as well as a fast-paced action adventure.
For a city builder, we've got Minecraft. Though Minecraft is an ancient game they are trying to revive with VR, and I would agree that it needs something new to really sell systems.
VR needs two things in my mind:
A breakout title that really demonstrates the power of the VR experience. A Mirror's Edge in high fidelity VR (although with some actual game attached.) Something that makes people go "Yeah, I have to experience that." When systems were not a every three year kind of thing, it took a game and something you had to get in to that motivated you to buy it. Once you've bought it.....you've taken the most expensive step and are in.
You're describing pretty much every single gimmicky tech demo that already exists for VR.