The founders were the brightest political minds in history and this was their solution for the circumstance we now find ouseves in. IMO we should trust they knew what they were talking about.
It is my opinion based on seventy years of life and much study that the problems we have stem from the fact that we elect people who refuse to abide by the existing constitution and then we all too often reelect them because all too many Americans know little or nothing about the constitution or simply do not want to live by it. In short we have about the sort of government that the MAJORITY deserves. Therefore I see absolutely no reason to believe that having a convention to propose more amendments which either will be ignored by the people we elect or as has already happened more than once the amendments will be passed but later turn out to have been a terrible mistake can have anything but a negative result. If you wish to pass an amendment requiring a thorough background check on candidates and a test requiring them to prove that they are not idiots I might get behind that.