If I think pessimistically, between the TPP, NBN and carbon "tax", this government could do 50+ years worth of damage to Australia's economy, not to mention damage to reputation.
Worth noting that the spying incident occurred in April 2009, which was under the leadership of Kevin Rudd... who would have been Prime Minister if Abbott hadn't won. Voting the other way may not have reduced the impact of this incident at all.
I think all we can do is stop looking to government to solve everything for us. Work on your own sphere of influence, what you can improve yourself. All sides of politics are failing Australia right now, maybe it's better to just bypass government wherever you can, do things yourself or work with the people who can do things directly.
There's any number of controversial bills that could trigger a Double Dissolution. The near doubling of the debt ceiling is one, though I expect Hockey to capitulate and take the 400 billion option.
Clive Palmer's senate team are the ones to watch as they will be key in blocking the passage of any supply bills.
I think all we can do is stop looking to government to solve everything for us. Work on your own sphere of influence, what you can improve yourself. All sides of politics are failing Australia right now, maybe it's better to just bypass government wherever you can, do things yourself or work with the people who can do things directly.