Micro reforms aim to improve some of the structual rigidities in the Australian economy to ensure long term sustainable growth. If used correctly micro reforms can improve unemployment, reduce inflation and improve external stability in the long term, to ensure that macro policies can be used purely to stimulate demand without having to worry about other nasties such as inflation.
Policies to reduce the CAD involve anything to improve the level of national saving i.e. compulsory superannuation, fiscal surpluses in recent years... also anything which improves our international competitiveness of exporters, such as micro reform, should improve our CAD.