Ha, the first time I tried VR it was a multi-person experience. Back in the early 90s, I played Dactyl Nightmare at some tourist location. All 4 members of my family were in the same "world" and could see each other. It was, like most VR games today, fun for about 10 minutes. There's still some interesting experiences being developed at portable venues (ie, thevoid.com).

But I'd also say that FOV is really, really important. Right now the experience is just like putting a little TV on your face with an IMU. Immersion requires peripheral vision and spatial audio.