My AAA VR title would require a AAA VR headset, the Index is pretty good I'm sure. But I'm talking a headset that takes up no more real estate than Geordi La Forge's visor, when they get there and it has our full or close to full real life fov, 6K+ resolution per eye, excellent lenses or projecting the image directly into our eyes/brain (non-obtrusive) and of course 120fps+, eye tracking and full body tracking down and touch. Essentially I want something that passes as my own personal Holodeck, till they get there (or there abouts), it doesn't matter how good the games get, it will remain niche and i'll feel disappointed by it!
Saying that, I still like that VR is a thing and despite what I just said, I like it more than most do it seems. I think you can guess what my dream VR would be from what I already said above, a Star Trek game based on the Enterprise/DS9/Voyager, where you start as an ensign in Starfleet Academy and work your way up to be captain, space combat, away missions, even a Holodeck in my Holodeck, count me in!