I read a reoport some months back in which head coach Hollingsworth said no Aussies would be touring Europe this year. That they would have to basically prepare in Australia and then go to the Games in Delhi. If that report was accurate, then it makes even more sense to hold trials - perhaps in Darwin or Townsville in the tropical north - around August.
And the top athletes, who make a living on the tour in Europe, can either take their chances by not returning for the Trials, or be pre-selected because they’ve earned it with current performances - people like the Aussie world champs medallists (outdoor and indoor)