Cycle campaigning

I've done a lot of Dr Bikes at Queen St during the evening rush hour and though I generally agree with you about the infrastructure there are also a great many cyclists there who cause problems for themselves and others simply by riding too fast for the circumstances. And that is putting it politely.
A bit like Goldsmiths Row in Hackney or, frankly, any other shared use space I have ever seen.

I'm always heading north at that time and most problems I see are a direct result of pedestrian and cycle traffic being at right-angles to each other, with the pedestrians not always expecting bikes to come off the road (which is fair enough really). If speed is an issue it's because people are trying to get away from the vehicles behind them and then keep some momentum going up the hill.
With the barriers it's worse because everyone is aiming for the same small gap and there's no margin for error, even at walking speeds.

Goldsmiths row works for me because it's not really shared (bikes on tarmac, peds on paving) and there's no cross-traffic to speak of.