You guys seem to have missed that he meant this suggestion (as far as I can tell) to be mainly for the autox arena. I for one would wholly support this addition, as it'd be great for the MRT Cup that the League of the Americas is putting on right now, and for any other serious racing (with custom layouts) that people would want to do on the carpark, etc.
I would NOT want to see it extended to the permanent circuits, though.