Pack the Union: A Proposal to Admit New States for the Purpose of Amending the Constitution to Ensure Equal Representation
The article is interesting but a bit messy.
There's the argument that we need greater equal representation because the federal government has great power: it can levy personal income taxes, change the definition of marriage, and penalize the failure to purchase health insurance. But many conservatives would counter that this shows why we need Supreme Court justices who don't believe the federal government should have that power (this is not my position, but seems to be an opening in the article.)
I'd also imagine that when congress passes laws that don't have majority support, it's not because of small state Senators. Delaware and Utah aren't the reason paid parental leave hasn't passed.
There are also some bad faith arguments. For example, they make a big deal of the Democrats winning the popular vote in the Senate when the majority of the difference was that the runoff in the most populated state was between two Democrats.
I'm not clear on how many states they plan to carve Washington DC, which would be in the bottom three in terms of population, into.
I do think there is an argument for changing the Senate to be more like the British House of Lords. I've probably argued for the Wyoming Rule before as a way to determine limits on house districts.
Note this this got quite a lot of negative blow-back on twitter.