Let the players have main menu backgrounds on tracks in specific locations, or allow them to manually place where the backgrounds are. Having multiple garage designs, color options, and lighting options would be very nice too.
For example: A preset of Monza could have 3 selections for our cars to sit within the background. Players would then choose which one they like, along with the time of day, or night etc.
This expands creativity and could be a very nice addition to our customization abilities if it doesn’t take up too much memory or game storage. It also provides more possibilities for Forzavista or perhaps VR immersion.