One suggestion I had was for the House to pass a motion saying that it would support or approve--some kind of wording like that--the Governor General refusing a prorogation that hadn't been heard without its consent or was needed for an emergency. In that sense, the Governor General would be acting to reflect the wishes of the elected House of Commons rather than purely on personal prerogatives. The idea would be then to empower the Governor General to prevent a wrongful prorogation to occur in the first place.
Again, it's a two-edged sword, because if advice from the Prime Minister is refused, the Prime Minister could go all the way and resign and then you'd have quite a sweet pickle. However, if this is coupled with some kind of motion that, as I said, defuses this and says that this is not a matter of confidence, then the Governor General would be quite authorized, I think, to refuse a resignation and say, “Sorry, I don't accept your resignation, as the whole issue is this Parliament must continue to do its business, and you're the Prime Minister, so get on and govern”.
We've had some examples in the past of vice-regal people refusing advice and the first minister carrying on. In Newfoundland in 1971 the premier wanted an election. The Lieutenant Governor privately said no and the premier simply carried on, because the Lieutenant Governor said, “I'm saying no because we had an election recently and I want to see this government function”. So the premier said okay. It was some months later that an election was in fact held, once it became clear that the House couldn't function.
I think this is an important principle to re-establish: that refused advise should not automatically authorize a Prime Minister to resign and make it a confidence issue. What we're trying to instill here is the ethos that Parliament should be allowed to function while it can and the government should continue to govern while it can.