No party will readily reveal it's plans and policies fully in opposition, and would be extremely stupid to do so. It would be like asking Sean Connor to publish his tactics and team selection in depth before the fixture list is known. The party who readily throws out it's policies when they don't know if they'll have a chance to carry them to fruition will never get into government. How many times have we seen FF steal FG plans or suggestions and wrap them in a green flag and fly it as their own? So being vague (yes we can etc) and putting on absolutely non-sensical "leader debates" just won't work, the charade that is the US debates show this.