Ranked choice doesn’t get around the problem of people not responding to the ‘nudge’ of Federalism and clustering in a couple states along the coast.
The Senate was given the powers they enjoy as a counter to the Executive branch being separate and embodied in one person. A good chunk of this power needs to be taken from this half of the legislative branch and given to the House, similar to what happened in the Parliament Act of 1911. Our problem is that the structure of US government makes that much harder than how they did it in Britain.