Hello,
What about having objectives to complete throughout the season and the seasons, which would give bonuses?
A page would be set up with a list of goals (eg. win 5 GP, make a pole position, finishing on the podium three races...) and once a goal is achieved, it would give you some money or turns...
To go further, I imagined cut these goals into several levels:
A member who starts has the level "newbie" and easy to complete objectives
A member who has been there more than one season passes at "medium" with more difficult goals
A member who has been there a long time and finished the medium level passes at "pro" with objectives very difficult.
I think it would spice up the game more, please make your comments, criticisms and suggestions!
Cheers