Its not obvious how a larger congress would solve the problem and not creating others. Lots of problems could be solved by greatly reducing the power of govt, such as money in politics and the need for lobbyists. Both of which are used as influence or protection against govt power.
Rather than enlarge Congress DC should be shut down. Send all the reps to their offices back home and let them televote, etc. That would bring them closer to the people. Turn DC into a museum.