In some respects I agree with you, but on balance, I don't think postponing matches is a better option that using D/L.
As a contest, it's less than ideal to postpone - for one, the conditions can change markedly from day to day, and they have such a big impact (ie. bowling on an overcast day with soggy outfield, and then batting on a sunny day with quick outfield). I also think it'd be unsatisfying for fans, who are keen to see a result.
However, the major issue is logistical - travel itineraries, broadcasting, ground hire, staffing, etc.
A bit vague comment. Care to share?
I hope Katich gets a run in the Test matches. If he does, he'll need to capitalise. Likewise, Hodge who I think will be finished at that level unless he performs extraordinarily well (in which case he may forestall the end).
The bowling will be the more interesting - and potentially painful - aspect, though. I think it'll be a good test for Mitchell Johnson, in particular (ignoring the spinner, likely to be Cullen).