If we start thinking, they should deffinately take away the map option, after all, it's not MotorCross Madness, It's a simulatort, and I haven't seen that many real cars that have a live map of the track displaying other drivers floating in the air... And how many cars have a chatting-device so you can talk to the other drivers on track while driving...
The ones that would lose their night sleep because of the indicator arrow could always swicht it off...