Absence of a grill is, itself, good for aerodynamics.

As to the style Tesla has chosen so far r the front and the rest, I actually like it. The one element I do not like in the Model 3 is the steering wheel. As to the rest, it is a pretty great looking car.

I think the interior without instrumentation in front of the driver may actually be quite pleasant while driving. I am curious to see if that is true. I'll certainly test drive it when possible.