An open letter to the FIA (which will never be read anyway).
Remove all limits and regulations on aerodynamics restricting car designers in F1. Let them have a go at building cars that are meant to be aggressive racing vehicles, which actually look like they belong to the pinnacle of motorsport.
It stirs up the competition - more creative ideas, innovative designs and concepts. Limitations on engines and other non-aero features can still be present. Imagine the cars, the competition and the racing we'd have in Formula 1 if engineers were given complete freedom in the aero department.
This imaginary world would probably look something like this:
Imagine all the variations and the different design ideas. A world that promotes innovation and creativity the way F1 is supposed to promote technology. Of course, such a world is an extreme fairytale since safety measures limit awesome aero designs.
Still, I believe giving complete freedom to aerodynamicists is what Formula 1 needs to re-establish its reputation.