I don't think that goes far enough. Anyone who's been in a minister's office comes out with not only expertise in some areas but an understanding of the process. If you talk to someone in government who was in opposition six months ago, they understand the mindset of that government. They understand how the process works and the dynamics between them.
So it's not just a question of exempting them from the area or the place that they were before. I think you have to go further than that.