I had a similar thought a "Use at your own peril" VR mode shouldn't be to difficult to tack on (he says with no VR game programming experience ) .
That said some UI may be difficult to use or even unusable in VR in this mode.
Yeah I think a super basic 'just add headlook' variant would be relatively rough to use on those fronts. But it could still be enough to nose around the Legs gameplay in theory. And presumably would be a lesser issue for any Odyssey flight gameplay.
Part of my thinking is that:
A) To build a VR variant, they'll have to rework UI / detach the 'gun arm' from the camera etc at some point.
B) Even if they can't do that for launch, if the experimental branch is set up they could get to some of those 'starter' aspects post-launch. Hopefully
I reckon flight access, plus a basic 'hardy tourist' look at some of the Legs aspects, would see a lot of VR-heads buy in still, rather than walk away from the franchise etc. (Doubly so if it did prove possible to have incremental improvements added to the experi build post-launch. It adds that 'something to look forward to' effect ).