Yeah. The problem with the Wyoming Rule is that the rounding is still too lumpy at the low end. The problem with the current House system isn’t that one small state has more power than its population indicates. It’s that due to rounding people in some small states end up extra powerful and people in other small states end up extra powerless. The medium and big states mostly end up in the middle with smallish epsilons vs. the overall average power per voter.
IOW, Montana has 1.75x the population of Wyoming but under the WR would still only get 1 rep. Lots of smallish states have a similar problems.
One way to fix that is to say that the max permissible rounding error is some arbitrary but small percentage, say 10%. And then use the smallest House member quantity necessary to ensure the worst case delta between the most over- and under-populated district is less than that epsilon.
Another way to fix it, albeit one fraught with a different set of risks, is to decouple the headcount from the voting power to achieve this same outcome. IOW, if our unit of representation is, arbitrarily, 100K citizens and we’re using the 2010 census numbers, then we could keep 435 reps as now, but …
The 1 rep in Wyoming gets 6 votes and the 1 rep in Montana gets 10. Meanwhile the 53 reps in California get to split up 373 votes between them. Which could be done as 7 apiece = 371, plus the leftover 2 votes distributed on the same percentage as the individual votes went. Which in practice probably means one vote for and one vote against on most questions. etc.
An obvious issue here is that each very small state will almost always vote all its votes unanimously. Whereas bigger stats will tend to vote, at most, 60/40 one way or the other. Which further amplifies the Senate problem.
As Chronos almost just said, if we’re a unitary nation, the Senate is the problem. If we’re really a loose confederation of 50 equal sovereigns then the House is the problem.
The meta-problem is that our paperwork says the latter and our reality since about 1875 is ever-increasingly the former. With no evidence that will or should reverse for anything less than a cataclysm.