The big question for what happens next for the city of Brisbane and for many cities worldwide is the role of climate change in flood events.
The previous big flood event in the city was in 1974. Since then a dam has been built as flood mitigation and in 2011 it has protected the city from more severe flooding.
However, with climate change, the expected frequency and severity of flooding could be expected to increase. So yes, a competition too – looking at the bigger picture – to design floodable spaces and places for cities would be a great contribution to urban flood defences and urban design.