You are a legal resident of Canada, even if you are reported and the right to enter and appeal remains the same. As long as you have a SIN number, you can work. As I said, obtaining healthcare might be a struggle. Keep in mind that if you do make it in without being reported, remaining for 2 years, regardless of circumstances would be key.
Worst case, you can try entering and if reported you can actually start the process to renounce at the border. It would have no implications on future applications.
I wouldn't have an issue to stay in Canada for 2 years. Healthcare is not that important to me, I get seasonal allergies and some heartburn here and there. But if an emergency prevails, would I have no healthcare at all? I know without healthcare, it would be really expensive and I would just have to keep on paying my whole life if something like that happens. Fingers crossed and nothing would happen but still, better safe than sorry. Also, if that's what it takes to be a PR again, I am ready!!