While the core point Paul Kelly has made that the ALP needs to reflect and change is obviously correct, his argument that a change in leadership does not do the job may not be so correct.
A change in leadership, say back to Rudd, can work if the new leader is determined to change and can bring about that change. Otherwise, a mere change in leadership will not work, as Paul has put it elegantly.
Rudd, if he has learnt the lessons why and how he lost the leadership, is the best person to do just that. He has the quality to bring the public with him and be popular with the voters, although what he would really also need to do is to add real substance to policy and achieve hard results.
With that quality, he would be in a position to push changes of the ALP culture. Of course he would need to work collegiately with the caucus colleagues to achieve it.