Or just go with proportional representation.
Amendment the First, yes this is its actual name because it was deemed to be the most important of the original Amendments, should still be up for a vote among the states to Ratify as an Amendment to the Constitution. It would have set the number of people represented to one Rep at something in the neighborhood of 15,000.
From what I have read about it there was no limit on how long it takes to pass, I just wish it only needed the same amount of states to ratify it as it did back when the Bill of Rights was added, all it would take is for New York to ratify it to pass going by the 13 Original States.
The law from 1912 that limits the size of the US House of Representatives needs to be repealed as it goes against what the Founders wanted for the People's House of Congress.