I understand the process as you have defined it, and I disagree with your assessment.
We are merely discussing theory. The only time this has been actually tried, the result was a completely new constitution irrespective of what the old one stated.
‘A republic, if you can keep it.’
Be warned and beware.
Then explain this statement.
"Anything can happen when you put a bunch of people in a room when each of them believes that they have the power of the people and no underlying limits on their power."
What is it you think can happen that gives you concern? What power do you think these people in a room have?
You understand that the option to call an article V convention was added as a PROTECTION to the peoples right to change their government. It's there in the event the people want to change things but the government refuses to do so. Lastly, if adding the article five convention option could easily put our republic in danger why would the founders have added it?