It is a good use for VR, but I also imagine most serious flight sim users already use TrackIR which seriously hampers their adoption to VR. Im not sure if I was offered one or the other for free if I would even choose a VR headset despite being a much higher monetary value because TrackIR already works so good, doesn't restrict vision from my actual controls, and doesn't isolate me from other things that might be going on around me.