Not the best improvements suggestion thread in the world.
-1 on all counts from me.
The MRT/BF1 have no need for (and therefore probably don't have) speed readouts IRL anyway. If they did whether they are displayed in km/h or mph is pretty trivial and easy to change. The only semi-valid point you made was that the Raceabout is only available in LHD IRL.
As for the other cars, well most sports racing cars are RHD (
http://sitematrarama.free.fr/Le%20Mans%2072.jpg) because of the natural advantage the weight distribution gives on a clockwise circuit so I'd be against removing a realistic feature.
Most of the suggestions give no advantage but simply serve to piss people off.