It's not the GOFOs that won't use the NDA that way, it's the politicians who would be committing career suicide.
How much more is it career suicide if the need for using the reserves presents itself and you've basically created an organization that can't be used?
You're thought process is like the RegF attitude of "what good are you if you haven't done anything for me today?" There's a big difference to having a reserve force that you use all the time like Class B's as a mini RegF during peacetime. It's an entirely different thing to have a capable reserve force available to mobilize when a real need is there. Remember that using reservists compulsorily isn't like conscription. Reservists have already signed up to serve and trained for the eventuality.
We need to remember that Canada isn't America. The public has no appetite to read int he papers/online about reservists being forced to go overseas, and companies being forced to let their employees go away for 6-12 months at a time.
That's pure speculation. But even if true it doesn't answer the question of a circumstance where it becomes necessary to use military force. You make a very broad assumption that the time that you will need a military will never come. If that were true, if it was always a matter of choice, then why do we maintain a RegF at 25+ billion a year? There is absolutely no logic in maintaining the type of RegF we have if you cannot conceive of a time where we are compelled to mobilize a military force.
If Canada said "screw it, let's use the NDA", how long would it be before the forum was filled with "My company let me go because I was a reservist", or "When they found out I was a reservist they didn't hire me"?
It doesn't take a legislative drafting genius to come up with proper laws and incentives to minimize those situations. You'll never eliminate the issue because some employers are assholes, but with a proper scheme and information campaign the issue will be minimal. Hell, we've made paternity/maternity leave a going concern; how difficult is military service in a crisis?
Suppose the business community gets on board, how long until something happens to a reservist that was "forced" to deploy, and their family goes running to the media crying because their baby was murdered by the government?
Come on - let's get serious. We had reservists come home in body bags and seriously maimed from Afghanistan. Canadians stood on the bridges of the Highway of Heroes and mourned them as a nation; we didn't run to Parliament Hill and crucify the politicians.
Canada isn't America, Canada does not have the same culture WRT military service, and wishing it was so won't change that.
Your looking at a country that had 1.1 million people in uniform during WW2 out of a population of 11.8 million. Stop thinking we are all hippies who like to sing Kumbaya. We're talking about reservists who have volunteered to serve, not conscripts.
Edit: I'm not saying this because I'm proud Canada doesn't take the CAF seriously, whether Reg or Res, I'm simply pointing out that looking south and saying "they do it so why can't we" is a fairly pointless discussion on this particular subject.
What's pointless is sitting back and wringing your hands and saying we can't, we just can't. Although I admit that has a certain scent of Canadianism to it.
I know that
@WLSC has put his finger on one of the main points with that anecdote about the CWO. Back in the day I gave numerous lectures to RegF and ResF on ResF terms of service and far too many of them were surprised at all the things that are in the NDA and QR&Os. There is an institutional ignorance and/or myth about what the obligations of a reservist are. That whole brief fling with respect to limited and unlimited service was a glaring example of that. If our own leaders don't understand it then the politicians will have no clue and will not even know what questions to ask.
We need to strive to be better than we are. Remember, politicians created the NDA the way it is - and the way it is is that you can mobilize the reserves - at any time.