Why did the framers establish a ratification process that bypassed congress and the legislature?

The main reason why the Founding Father established a ratification process that bypassed congress and the legislature was because they needed to expedite the process, and they knew that if they left it up to the legislature it would be dragged on forever. 

Protecting and assisting  u.s. citizens  living or traveling abroad; assisting u.s.  businesses  in the international marketplace; coordinating and providing support for international activities of other u.s. agencies (local, state, or federal government), official visits overseas and at home, and other diplomatic efforts.keeping the public informed about u.s. foreign policy and relations with other countries and providing feedback from the public to administration officials.providing  automobile registration  for non-diplomatic staff vehicles and the vehicles of diplomats of foreign countries having  diplomatic immunity  in the united states