Yup, we should have between 550 and 600 seats with district lines drawn by a nonpartisan commission.
I think there should also be a debate over term length. 2 years is awfully short. After few months, Reps must already start running for reelection. They're spending way too much time with running for office rather than working on solutions for common problems.
Make House and Senate both 4 year terms elected concurrently with the president? For checks and balances purposes, all governors and state legislatures are elected only in the midterm years?
I guess the problem with only electing governors and state legislatures in the midterms is that they may be overshadowed by national politics. Or the opposition party would try to score off points and decalre statewide races a referendum on the president. But these should be about issues related to the state government.
Maybe just electing half the members each two years? That's also the case at the state level.
This would be ideal for the Senate, not for the House. If we're going to have House elections every four years, it needs to be entirely proportional and eliminate congressional districts altogether.