Agree that using an enormous amount of energy to create this artificial environment, in this city, is totally mad. There aren't many ice rinks in Sydney because this is not a place that it is in any way natural to form ice. Complaining about the lack of space for ice sports is like living in Alice Springs and complaining that you can't surf. Why not take up hobbies that are in better harmony with the environment around you?
Anyway, rising energy costs will shut it down eventually, as probably happened to these other rinks. In the meantime, to ensure it makes a positive contribution to the suburb, it should have stringent controls on the amount of car parking and how it advertises this (eg, website clearly stating that on-site parking is only available for disabled people and that street parking is expensive and impossible to find). Make the connection to the train station as straightforward and well-marked as possible. Maybe a new bus stop right at the rink. People arriving by public transport will revitalise the area; people arriving by car will just cause more traffic chaos.