residents could back into end-on spaces, thus avoiding the danger to rear-seat passengers involved in reversing out
Not to mention other road users... but yes backing in would be better assuming other road users would give you the time and space!
I suspect the backing out comment is a reference to mobile creche users. If you have an adult in the back of the car they could actually check to see a bit. Children though are too busy eating or watching DVDs to be trusted ;-)
Anyway - Albany Street was one big car park last week when I went down there at around 10am.
Broughton St was the same - air quality so poor that the monitors had probably given up in disgust.
Around thirty people were sluggishly trying to get to York Place. I had time to go into a printer on Rodney St, collect a print job and pass the same vehicles that had only moved a few yards in ten minutes.
I don't think my ability to cycle faster would change anyone's car use though... I assume that anyone there had no other route to use.