The need for a grills has long been a drag inducing and efficiency sapping design requirement / constraint which has been beautifully (and not) embraced for decades. The Model S initially embraced this with that grey solid oval for familiarity sake in order to achieve a recognizable yet attractive look. As this familiarity gives way to an era no longer requiring a grille, the respective evolution of styling in general will be interesting and the hood shut line may itself become a defining design feature.
I think I fell in love with a porn star
And got married in the bathroom
Honeymoon on the dance floor
And got divorced by the end of the night
Thats one Hell of a life. (K. West)