That's the thing, mine aren't easily replaced and it's not because they live in DC much of the year, but because my district is gerrymandered, and that seems to be true for most districts in the country. Only a fraction of races are actually competitive after the primary, and there's not going to be a primary to replace a sitting rep unless they piss off the party.

If we simply made state politics more impactful than federal, parties would move their focus to rigging state elections.

The issue, IMO, is there's too much incentive to rig politics. Government interferes so much in all aspects of life and is so powerful that it will absolutely attract money. If we shift more of that to the courts, now that money would need to focus on everyday people, which I think is an improvement.