with 30k electors in the house, I expect it would be much more predictable.
It seems plausible to me that it would decrease corruption. It is a lot easier for power brokers and interests to lobby a 435 member house, than 30K member house. Inversely, it is a lot easier for a citizen to lobby their representative when they are 1/12,000 instead of 1/800k.
30k members--that's a couple of Army Divisions--is more likely to form rigid authoritarian groupings simple to get in and out of the building in a reasonable amount of time.
People don't scale. The overhead of coordinating among so many people would be stifling.
No, the correct approach in my view is to delegate as much as possible back to the States.