Yep. Buladhelah and Karuah will or have gone the same way.
Nowra is like Taree - a regional service centre and has enough momentum to survive the bypass.
Actually it may create an unexpected plus for Nowra. Yes it's an employment hub so will survive and thrive in the future but its actually already been bypassed once before. The original highway went straight through the guts of the town. Then the east deviation was built about 500 meters to the east.
Then in true crap council planning style they proceeded to build the major shopping centre on the other side of the highway with complicated instructions on how to reach it or the town centre. Plus you can throw in a crap load of roundabouts and lights . A bypass will actually help them join the town back up again. Interesting.