Al Clarkson is a genius so there's nothing surer than them being up and about in September 2016. They'll likely have the most efficient game-plan yet again and their players will be managed to perfection.
But whether they salute again will depend as much on the quality of the opposition as it will on their own performance. Brisbane went up against a very good and experienced Port Adelaide side in 2004 when shooting for their own 4-peat. Can West Coast become that good? Can Freo manage their players better and time their run? Or will a quality Victorian side emerge that isn't overawed on the G? Hawks will win it again if no one steps up to deny them basically. They're not going to deny themselves.
Clarko is a genius and he will protect the older players again. The whole game plan, especially in H&A is designed to prolong their careers and conserve their bodies IMO.
The biggest threat to the Hawks is Port. The Hawks really struggle with their game plan. I was certainly not disappointed to see Port miss finals this year, not sure it will happen again though.