@mebalzer: I think you are missing whole point of Daydream - to provide low latency VR, on par with Gear VR, but on wider variety of phones. None of those phones exist yet. So all you get is laggy Cardboard experience with any phone you use Google VR on (simply because those devices don’t have low latency superAMOLED screens and fast IMUs).
So even if you upgrade all existing today Android phones to ‘N’, you won’t ever get same smooth VR as on Gear VR.