Are you guys talking about actually banning people for not being able to drive properly? That seems like a really
bright idea, watch the user base drop to 5 as soon as something like that is implemented.
I think a system that dynamically tracks your crashes and position you in a certain rank based on that would be much better. I mean something like this, the game would track down certain info about your crashes, like speed (yours and the other car you crashed on), position on a track (in a straight or corner), and angle of the crash (like, if you crashed on the side of the other car, or on the rear, or head on) and also if the other car lost control after the crash.
For example, say you are in a straight following a car and it brakes but you couldn't brake fast enough and you bump on it at low speed without making it lose control, you get a slightly decrease on your rank, but if you enter a corner at high speed, crashes on the side of a car doing the corner properly and sends it rolling out of the track, you get instantly ranked as "wrecker"(lowest rank) and can't join any ranked race with a rank higher than that unless you manage to drive cleanly long enough to rise your rank back to "normal/clean".
Also, as with
any feature, this should be able to be turned on or off on the server.