The addition of “activities” in “works, undertakings or activities”, that is positive and should stay.
The other part about making the letters of advice enforceable is also good. Those two things are good changes and should stay.
To respond to your comment about the difficulty in doing restorations, one thing we advised back in 2010 was that, with conservation groups and environmental groups, there be an actual letter of advice for restoration activities, so that they could happen much more quickly.
I think there are many regulatory and process-based things that could be more efficient and would address many of the challenges under the previous act.