You've got a lot to chew on here, but I stopped to nibble especially on the Constitutional Convention. Kind of scary, if you think about the potential consequences in a country that is suffering from political hysteria. However, I went on to refresh my memory on how changing (amending) the Constitution works. There would have to be a 2/3 majority in each house of Congress before the proposed amendment went to the states for approval. I can't see 2/3 of the Senate or the House agreeing on anything. If the amendment passes that threshold, then we have a problem, because 3/4 of the states would have to approve the amendment. Given how lopsided the electoral outcome was in the last election, 3/4 is highly possible.
Sorry for the long response, but you brought it up :))
Not sure that I understand the mechanics of a potential Constitutional Convention (Article V of the Constitution is thin on specifics) but any proposal that might come out of it would still need to be approved by three-fourths of the states, a difficult threshold.