Oh it's already working. People who aren't compatible with 3DCG stuff goes to those.

I didn't mean it won't work technically (of course it will). This is what I was referring to:

https://www.youtube.com/watch?v=h8srG_iKh5Y

No, it's not about whether it technically works, there are already businesses going for few years. Looks like there are such stereo fisheye rigs, with a pair of m4/3 cameras, a GoPro for preview? and a 3dio packaged to go on a crane. And seems they're transitioning to 8K? Interesting...