Its weird how Gran Turismo used to be THE prolific racing game on consoles. And now its just another sim racer thrown onto the pile. The franchise needed a huge overhaul or direction change after Gran Turismo 5.
Something like a story mode would've been interesting. Starting as someone that races in city streets, moving onto racing at tracks where you can independently register or sign up, onto professional racing outright.
Or even a owner mode where you manage a racing team. Decide what vehicles to get for your team, which drivers to hire, pit crew/mechanics, competing for sponserships.