Interesting. Now it makes even more Sense; StarVR One specs mentions Quadport Rendering. Now I recall reading they were using Eye Tracking as well for Auto Ipd & Distortion correction.
So the lenses don't need to be perfect at all; but this makes sense with them setting requirement to min 1080 as it has to divide the pic into 4 viewpoints to render. The Dynamic Distortion correction would be simply to accommodate eye position changes in terms of angle viewing through the lens.
Now if pimax can at least get the dynaminc distortion correction implwmented will make it a happy medium. However it does put a lot of real pressure on Vrengineers(sp?) Xtal headset.
The Xtal's said by Ben to have better clarity then StarVR One. But you need to have the neck of a bulldog to use it & it's absolutely enormous.
Now @bubbleball posted Idealens is building a 180 FoV headset; the pics make it look like it's not using angled screens.