The Westminster System (House of Reps, Senate, and Opposition) is a pretty good way to enact democracy. But I certainly don't think this system is the be-all-and-end-all within democracy, and neither do I think that about democracy itself. We need longer terms, firstly. A lengthening of the political cycle will to a certain extent help to remove the populist nature of most governmental terms. And I also think the structure of the government needs to such that it is composed of experts in the various fields of human activity - scientists, philosophers, economics. This is particularly true for the house of reps or what ever will function as the legislative. In terms of the role of the senate, the idea which is in place now isn't so bad, but another option would be to have a house that consists of regular citizens of varying fields that are drawn for a certain term. This could act as a litmus test for the policies that the experts are creating. Though this is problematic.
Also I think that the concept of an opposition, as in two major groups..government and non-government, is overated. There should be a better accountability system than this, which just leads to populism and endless political debate.
What do you mean?