It depends how you do it. You need to retain some visual sense of a boundary. The new paving and road surfacing in Bromley is an example of how NOT to do it. It looks beautiful - the paving and road surface are both made with the same honey-coloured paviers. Unfortunately, pedestrians are treating it as if it has been pedestrianised and are often entirely startled by cars, even though the cars have always been there, it's just the road surface that has changed. It doesn't help that there are blind corners. I drive VERY slowly along that section and often have to stop for people just walking out in front of me. People less familiar with the road won't be as cautious. And it's only a matter of time before someone is hit by one of the many buses swinging around the corner opposite the HSBC bank.