The Articles of the Confederation

In class today I realized how incredibly short-sighted the Articles of the Confederation really were. I mean, they offered statehood to Canada, but layed out no provisions for any other areas. They laid out no seperation of powers, with every job of the Executive, Lagislative, and Judicial branches of today's government being done by one body, Congress. They made no decision on proportional representation, instead choosing to pass the buck to future lawmakers. They constantly referenced the thirteen states, obviously never intending to expand to more than that. They didn't allow for a central ruling power to defend against other countries attacking. They reference a specific religion near the end, leaving little room for the diversity that we are known for today. And they really didn't leave a practical way to change anything, needing the approval of all 13 states to make any changes at all. I think I understand why the founding fathers decided to just scrap the whole thing