Opposing any attempt to stall the new law, which is awaiting formal notification to come into force, Attorney General Mukul Rohatgi told a three-judge bench hearing the case that a decision either way must be expedient as once the Constitutional Amendment to Articles 124 and 217 get notified, collegium will be replaced with a six-member NJAC comprising Chief Justice, two senior Supreme Court judges, law Minister and two eminent persons selected by CJI, Prime Minister and leader of Opposition.