I think it took them more effort to build in the disabling features than it'd take to just add the HUD. Given they did that to hide the fact their engine is borked, I don't think it's too much to ask that they sort this out as they 'optimise' it a bit futher and framerates increase.A HUD in VR is definitely more than a case of 'just throw it on'. That's certainly true.
And the HUD would certainly be just the tip of the iceberg for preparing a marketable VR port.
'Adding X feature takes more dev than you think' is a pretty good rule of thumb for us fans
---
It's for reasons like the above, and the very obvious no/low budgeting for VR at the moment (with other EDO travails in the foreground), that I'd recommend we think in terms of 'what could FDev do as fan service' / 'unofficially'. And even if we could convince them to do that, the results would likely be very basic. That's the kind of scenarios we're looking at for at least the next year I'd imagine.
I respect you going for the absolute minimum, but aim higher and you may also get that as they cheap out again.