I would say that is a very optimistic viewpoint. The limits of possibility are usually outside of what we think they may be.
What is most likely, IMO, is that the COS will be hijacked by "Progressive" delegates and propose a totally unacceptable collection of amendments in a series of "compromises" with the nominal Conservatives.
Of course those amendments won't be ratified by 38+ States. But there will be plenty of kicking and screaming as the results get presented. And at least 14 States will ratify all of the most extreme Leftist proposals. That will keep supporters energized and outraged sufficiently to assist in what will come later.
What will come later is a perfect storm of Democrat President and effective Democrat control of Congress (both House and Senate). There will be a rapid passage of new laws to "crack down on Domestic Extremists and Terrorists". Almost all of the Leftist measures proposed in the failed COS will be incorporated in the new laws - and the Constitution be damned.
Then the Government will attempt to enforce the new laws. At this point, please refer back to all those energized and outraged supporters of the rejected Leftist proposals from the previous COS. They will still be hanging around cheering and assisting with implementation of the "New Era". This will be a problem.
We are not helping ourselves much by counting on a Convention of States to fix the Constitution. Other activities will be required first.
I doubt that many among us are counting on a CoS to save us. The proponents insist (and I agree) that a CoS is a prefferable last ditch effort to right our ship of state before all civil mechanisms break, and civil war erupts.