Parking and public transport, Nix will need to work better with the regional council/public transport providers and the stadium. Though with parking deals for season ticket holders, not sure what can be done for others and not sure how many parks are available if discounted heavily and demand increases to match.
You can park for $5 reasonably close too if you don't mind walking 5-10 minutes - the Wilson parking building in Stout Street for instance is where I parked on Sunday.