The thing I didn’t mention is that the size increase shouldn’t be all at once. And it should come with a law demanding that House districts be drawn with the shortest practical length of boundary line to enclose the proper number of Persons.
On account of the first the constant adding of new districts over the course of years till they reach a certain size and no more would greatly disrupt the seniority arrangements. On account of the second it would mean the end of gerrymandering.
Toss in appointment of Senators, and more Senators, which would again let State and regional parties flourish becausethey could hope for national importance on the backs of local successes and we could possibly weaken the hold of the two big parties.
Also, it might be a good idea to allow for the number of Senators to increase over time with the size of the House.
I just think that it would ultimately add more democratic house representatives overall. Big cities would get additional seats due to where population is. For the senate, it’s a toss up as who would be most advantageous. Just seems dangerous.