No matter how many improvements they've made, VR + 13 year old FSX will be much more immersive and useful. It's insane that any sim developer would not even have VR on their post-launch road map. If running their engine at a sufficient framerate is an issue for VR, then it's insane that they didn't consider this from the ground up. Even 25 years ago VR was a consideration for flight sim developers (anyone remember EF2000 and the VFX1?).