So there will be new choice available for development of chassis. As you start the project of a new chassis you will be asked to pick the focus of the development. That would be one of 3 or 4 choices - speed, downforce, handling or neutral. That would boost your chassis by few points in some attributes. Speed focus would add something to maxspeed parameter, downforce focus would add something to acceleration, brakes and little to handling, handling focus would add strength to handling. Neutral focus would add same amount of points to all parameters.

Now what would that change in the game? For example when I did simulations for perfect car with 100% quality in all parts, 10 litres of fuel and 100% soft tyres for all 4 proposed choices on every F1 track, I got exactly the same overal time (29:49.500 = one lap on every track together). On some tracks speed focus had the advantage, on other tracks it was another focus with advantage.

Maximum difference between best and worst time on any track was 0.2786 seconds - that is in Monza and this was of course advantage of speed focus, the weakest time was made by handling focus.
Minimum difference was only 0.0315 in Yas Marina.

There are 9 tracks next season where speed focus is the best in dry conditions on perfect tyres and low fuel, 6 tracks where downforce focus is the best and 5 tracks where handling focus leads the way. Neutral focus is never best and never worst.

Simulations in worse weather or worn tyres or more fuel in tank, puts the advantage more to the side of handling and downforce focus. Of course it is just slight advantage in form of little bette roveral time (20l fuel/50% worn hard tyres - difference between best and worst overal time on all tracks is 0.3249s).

SO this is a basic information of created idea, now the question for you F1 managers, drivers and fans is, would you like us to implement this change for next season, so we can have such variability in races in season 20?