Whilst I'm not a fan of Herman Tilke, I also wonder if we unfairly criticise him and his team. The choices of host countries and the track locations must be part of the problem. It cannot be easy designing an interesting and challenging track anywhere where the topography is as flat as a pancake.
It has not escaped my attention that two of Tilke's best circuits are Turkey and the Circuit of the Americas. In the case of Turkey he had the natural topography to play with giving rise to a much more interesting circuit, especially with the fantastic "turn 8". At Austin he was faced with another flat, two dimensional sheet to work on but carte blanche to artificially create a three dimensional topography. There his design has worked brilliantly not only for F1 but also for MotoGP.
So my recipe is this: give the cars more mechanical grip from bigger tyres, engines with more "torquey" power delivery and "low down grunt". In addition, allow more ground effect and reintroduce circuits with highly varied topography similar to Austin and Turkey. Then restrict wing sizes and limit the number of winglets and vanes added to front and rear wings, but don't ban them altogether, whilst allowing designers to continue to explore aerodynamic shapes.
Finally, ditch the DRS it won't be necessary. Honest.
Note: a couple of circuits with some good, varied topography spring to mind: Brno (Czech Republic) and A1 Ring "cough" Red Bull Ring (Austria),