You took that with such grace - sending you virtual coffeeLOL!, well if nothing else I have to say your reply was good for some laughs from the way you phrased a lot of things, so I much appreciate that.
I got curious and looked it up. Apparently the term used for the phenomena (according to the NIH) is simply "VIMS" (VR Induced Motion Sickness)....yeh, doctors got real creative there. You're definitely onto the right track though in regards to it being heavily influenced by latency and rotation. I once had a headset with a 70Hz refresh and if I got too crazy in an SRV on bumpy worlds that bounce your SRV up and around I'd start feeling the sickness after a while. Definitely don't miss those days.
I've seen a few people over the years ask for a roomscale experience, but admittedly not many. No Mans Sky does it so I guess they though Elite should too (shrug).
Does XR put you on foot in VR from the perspective of being inside a space suit? (Never played X so no idea what the game experience is like). I know of a few techniques devs have learned to user over the years to get around some of the common issues with motion sickness, so I'm curious if XR does that.
Yeh I wasn't going to say the Cobra engine is incapable of pushing a better VR on foot experience cause that's impossible to know unless you're a dev working in the source code. so I just stayed away from speculating on that one.