Quid pro quo - BC should not be allowed to ship oil or oil products in from other Canadian provinces which would mean that BC would have to bring it in by tanker from Alaska or barge from Washington state.  

As well, BC's natural resources should not be allowed to traverse Alberta or Saskatchewan.  Given that there will be no LNG plants in BC this would effectively end fracking in BC and leave trillions of dollars worth of carbon emission producing resources in the ground.