I suggest (if possible) to implement another form of improvement of the car in the game.
During the race, the pilot receives the number of bonus points for improving the car that he can get after improving the design bureau.
And what if we change this system, make limited improvements.
For example:
- at one Grand Prix, the pilot improves a maximum of 2 possible indicators - for example, acceleration and braking by N points.
- at another Grand Prix, the pilot either leaves this acceleration and braking improvement, or vice versa reduces, but increases, for example, handling and downforce, focusing on another group of car improvements or looking for a balance between race settings.
I think this form of development of the car will allow you to diversify the competitiveness of the players a little, because everyone will have different settings for improving the car for each race.