Well, we can hope that this pushes Nikon closer towards innovation instead of refinement as we have had for a while now. More importantly, I hope Nikon reconsiders some of it's stances in favor of what people want that the Sony mirrorless FF offers. If Nikon keeps the OVF, which I hope they do, they simply must develop a good hybrid VF. The A7's lust factor for many is the manual lens support, namely features such as focus magnification, peaking, etc. Please let us not get into focus screens/technique/etc. and face the fact that an A7 is an easier camera to nail focus with our beloved fast Nikkors, generally speaking. Of course, catering to manual lens support has not at all been anywhere close to Nikon's plan. Foolishly, in my opinion. Instead of seeing the vast used MF Nikkor market as some sort of competitor to their modern lens catalog, they should use it as a platform.
Nikon know people want higher and higher performance.
Nikon does not know that manual lenses are gaining popularity and are stil a Nikon asset.
If I had the power, Nikon would release a DF-esque FF with a large hybrid VF, modular grip and run a campaign on it's prowess using both cutting edge *and* classic lenses. Let users know that even if they are eyeing used manual lenses, Nikon is the best camera for the job. Everyone I've known who got into DSLRs starts this way. Nikon needs to be there when they decide to fork out for a modern marvel lens.
Or Sony will, like they are.
"Want to buy a $3k body and a $100 old prime off ebay to start? Sure! When you decide to update, we have some G Master lenses for you."