The discussion of my Queen’s Birthday showed that at least some readers have problems thinking about how an elected presidency would work, what powers the president should have and so on. There are many different models out there, but my idea is that the president would acquire the current powers of the Governor-General (dissolving parliaments, including double dissolutions; resolving disputes between the Houses; and initiating the formation of governments after elections) but with less deference to the wishes of Prime Ministers than in the past. For example, the President could reject the shenanigans with absurdly drawn out election timetables that we saw in 2016, and saw proposed in 2013, and could refuse a snap election called to take advantage of a favorable climate.
Assuming this role, the President’s views on policy issues wouldn’t matter much; rather we would be looking for personal characteristics such independent mindedness and capacity for good judgement in a crisis. A possible side benefit would be that parliamentary elections would be more about policy and less about the personality of the party leaders.
Under the current system, we are called on to vote on a presidential basis, but with no guarantee that the elected leader will see out a term. Even if the rules were tightened to make spills more difficult, we would still have the problem of a successful leader voluntarily retiring mid-term, as Menzies did and as both Hawke and Howard promised to do.