Playgrounds are of great interest for many. They are certainly a great ride destination with children. Between 2015-2018 many of the playgrounds where reviewed on Weekend Notes. There a links to playground reviews below.
The list of missing links is long: route and tracks that could be opened for recreational biking. We can thank the Canberra Centennial Trial for opening a lot of the ACT commonwealth land for recreational use. Majura Pines to Kowen Forest is not far as the crow flies but the Majura Military Training Area blocks the way.