Why not just call the chosen 12 Lead Designers, 1 per team, each submits their deisgns, and each team can pick and choose what parts to copy... Or each car designer can only design for 1 team, and if they leave, they are banned from any association with any formula 1 team for 25 yrs. Designers are forced into retirement at age 50. Or after 10 seasons.
Maybe each driver in the team contributes 42% of their salary to the designer of the car, after all the driver cannot do anything without the designer's input..
Maybe each driver in the team contributes 42% of their salary to the designer of the car, after all the driver cannot do anything without the designer's input..