homealone

Its a good game, this - my ideas would be as follows

allow full ground effects aerodynamics, but reduce the size of the front & rear wings - the idea being to maintain downforce, but with less turbulence off the wings. Hopefully this would make slipstreaming & overtaking easier.

Remove all driver aids like traction control.

Have fully manual sequential gearboxes.

Have steel brakes, not carbon or ceramic - the idea being to increase the braking distances, leading to more overtaking into the corners.

Everyone use the same tyres.

Apart from the weight, the fuel & the engines, that is almost the same spec as a Champ car, which i find much more exiting to watch (on street circuits, anyway).