I would look closely at job growth prospects for any regional area in NSW currently.
Unemployment is trending upwards again, and though this is a state-wide issue (not being isolated to just regional NSW but including Sydney and major towns like Newcastle, Wollongong and so on); regional towns are likely to remain to be the most exposed to this.
And, because smaller towns are more exposed/at risk when property supply and demand fluctuates as a result of poor job growth/unemployment; investors can feel the brunt of this via prolonged vacancy periods.
Instead, look to stable markets that are less exposed to these ebbs and flows; ones that have multiple and varied revenue drivers for those towns. That doesn't necessarily need to translate to 'massive volumes of revenue'; it can be modest economic output (not spectacular), but this really ought to come from at least three or more sectors.
Good examples of towns that offer this variety would be Griffith NSW and its surrounds (Agriculture capital, plus some resources proximity, plus education); and Tamworth (Military, resources/mining, tourism).