I would hesitate to provide a hierarchy of the privileges. I think that they're all fundamentally important. You may have a situation where one is needed more than another. Sometimes, perhaps, the word “privilege” is not the right word, because it sounds like something that you get that puts you in a better position, and so on. Fundamentally, it's about allowing members and the institution to do their job and to fulfill the critical role in our parliamentary democracy. Certainly, the freedom of speech in the chamber is of fundamental importance, because it allows debate and the freedom to express your view, as is control over the proceedings and the access to the members, and so on....
Again, I would hesitate to put one above the other, because they all have been in existence for many years and under the necessity test, and by definition, I would see them as important.