Suggest including changeable weather, more complex upgrades, safety cars, more in race decisions than multi 21, shorter mini game timers, and more difficulty (in third season I won 17 of 18 races)
Safety cars are added in version 1.4
Thanks for the great feedback. We've just had version 1.2.3 approved by Apple which deals with the "easyness" issue - it's also live for Android. You can also turn off the racing mini-games in this version (on the settings screen).