"Long term" in a democracy is only up to the next election.
If we're to change the whole process of Government to enable a National response, then fine, but that's not what is in place right now. This can certainly be the catalyst for change as we've never had this level of fire activity across the country at the same time. The states are set up for these emergencies. They control what they need & when they need it. VIC wanted LHD's to evacuate Mallacoota, NSW didn't want/need that type of help. If we change the command & control aspect to Nationalise it, then that's just not an overnight fix.
ScoMo has done himself no favours during this emergency, that much is certain, but he's become the social media whipping boy at the moment & the "professional" journalists are jumping on the bandwagon now.