Wouldn't it be great to have at the beginning of every season a little test session with the car in order to develop it plus the already R&D during the season(doesn't have to be visually upgraded), with the option to skip it and have an average development that could be upgraded during the season with the usual R&D. For example: If you are starting your career right after the young drivers test have the TESTING with some main areas like -Downforce (in order to discover if the car has oversteer or understeer) -Braking (if its too nervous under breaking or locking too much) -Handling (again to improve understeer or oversteer) -Long and short runs (10 laps for long and 3 for short) -Tire wear (finding a way to make the tires last more but in a real scale) Each area could be just answered by just 4 possible options (Too much oversteer,Understeer on slow corners,Overteer on high speed corner,good; for example) Plus you could make your car more suitable to your driving technique or style