Firstly, in terms of the idea of putting disincentives into the standing orders, that's certainly possible. While legally, yes, the Prime Minister can disobey it, as he did with the fixed election law, what I'm suggesting in terms of the standing orders, plus the supporting legislation, is the creation of a binding conventional rule that will in effect have severe political consequences, and potentially for the Governor General to exercise her reserve powers to refuse a prorogation, which is in direct violation of the House of Commons.
On April 29th, 2010. See this statement in context.