I agree that the new rules do not add anything valuable, in my opinion, they merely set out what good drivers (that tiny percentage) have been doing anyway.
The new rules will enable arrogance to rule. Many pedestrians will continue to be careful, but some will just walk across without regard to moving traffic, expecting drivers to anticipate their actions, and submit to them.
With most junctions, we have a view on approach, and we can scan for loitering/dithering pedestrians. If we have close followng traffic, we can slow them more on approach, to reduce the risk of a rear shunt, and of course we can choose to abort the turn if the vehicle behind looks like a definite threat. No real change there. Whilst some may consider it cheeky, if there are loiterers, a short parp of the horn might encurage them to either stand still, or cross positively. The parp should be early enough to gain time for the pedestrian to react, and the driver.
The advantage of the trend towards SUVs, is that pedestrians may feel more threatened, so more careful. And they go under, so the view ahead is not compromised, whereas with a normal car, once you have more than two on the bonnet, the view ahead becomes difficult.