hi, welcome back to OSM. Some good changes here, but I also have a few comments:

1. The Northern Beaches Council Aerial Imagery is copyright, "The contents of this website are copyright and may not be reproduced in any form without the prior consent of Northern Beaches Council." as such the imagery cannot be used at all, as a reference to map from, or to trace features from. What in particular did you derive from the council images, as we'll want to remove/redo with imagery sources we can use.
2. Where possible it's good practice to keep the history of objects https://wiki.openstreetmap.org/wiki/Good_practice#Keep_the_history. For example https://osmlab.github.io/osm-deep-history/#/node/11671234344 had a long history of 10 edits, people improving the data over time but then you've replaced it with a new object https://osmlab.github.io/osm-deep-history/#/node/12415070400 which makes it harder for people to identify the history of the object which can be useful for mappers to understand how/why/when different tags were added. I'll restore the original node here to retain the history.
3. From what I can see the playground entrance was deleted here https://osmlab.github.io/osm-deep-history/#/node/10104608514 and now missing. I'll re-introduce this node.
4. According to https://wiki.openstreetmap.org/wiki/Key:natural natural=scrub is "Uncultivated land covered with shrubs, bushes or stunted trees." while there are shrubs and bushes in the understory, there are more substantial trees and think natural=wood would be more appropriate.