It's not the rules that need changing, it's people's attitude to the existing rules that needs changing.
People with scant regard to the niceties of aviation regulations are hardly going to take notice of say, an increase of the minimum altitude in Rule 5, when wazzing about in sparsely populated areas.
I am actively trying to change people's attitudes precisely to avoid a blanket rule change that seems to follow certain kinds of incidents - the Harding case being a good example. These knee-jerk regulation changes are often brought about by people coming to grief trying to do something that they are not trained or equipped to accomplish safely, and result in perfectly proffessional and capable operators being penalised.