A couple of things. I think everyone's belief that any new amendments to the Constitution would be summarily ignored is a bit exaggerated. After all, the feral government doesn't quite flatly, baldly ignore the Constitutional limitations these days, it just horribly misinterprets the Constitution to claim it allows them to do whatever they want. Any new amendments that were written so as to not allow such wiggle room would have a reasonable chance of reining the feds in. I don't say they wouldn't ignore them, just that it isn't guaranteed.
And as I've said before, if you really support the Constitution, why would you not use the mechanism built into it for exactly this purpose, to rein in an out-of-control federal government, before tearing the country apart? If the convention didn't work, we can always tear the country apart afterwards.
The Convention of States held a simulated convention recently, to see how it might work and what might come out of it. Here are the results:
Convention of States Historic Simulation
Final Convention Report with Votes
I'm in no hurry to tear it apart. I don't want it torn apart, and that is why I am voting as I am at the top of the ticket. If it does come apart, I want to be able to tell my great grandkids I voted for the Constitution, for the Rule of Law, for America as we once knew it.
Unfortunately, one very possible scenario is that it will shred itself on the current course.
There is a limit to the amount of debt a country, any country can carry.
There is already sectional unrest, evidenced by widespread rioting, and by the widespread anger Trump has ridden to the nomination, some of which is very ugly. It varies from place to place, but in some places, it's a powder keg out there.
A hot summer, collapsing dollar, hyperinflation, a little starvation, a few riots in the wrong 'hood, and there will be blood in the streets, not just the drip, drip, drip that goes on in urban areas now, but rivers of it.
There will be only one way to control that--troops, who will be the best fed and supplied of anyone except the insider cadre in government, which they will protect first. The flow of goods and services will suffer some interruptions, perhaps minor and intermittent, perhaps major and extended, and those may well occur far from any unrest. Most people are only a couple of meals from desperation, and desperate people shed the veneer of civilization very quickly, for the most part.
FEMA won't have to have roundups, people will go to camp to feed their kids and be sorted out from there...
Maybe I'm wrong (I sure hope so), and that's just one dark possibility, but at that point we will have collectively sold our birthright for a mass of pottage.
The scary part is that I can see this happening with either of the two major candidates.
Congress gives me no faith that they will resist the continuation of ruinous fiscal policy, and if things fall apart, they will likely be just fine, whisked off to some safe zone.
A convention could go either way, accelerating the end of the Republic if the wrong people are in charge, or following the formalities, to check off one more attempt to get our Government to follow its own laws. While such might call attention to what needs to be done, that has already been done by economists, political theorists, ordinary folks, captains of industry, and gone unheeded.
So, I ask your pardon for not being very optimistic about the eventual outcome.