I'm also a fan of making it 30k:1. You wouldn't even need to send everyone to DC, it could be done nearly 100% remote these days.
As long as I'm waving my magic wand around, I'd also like to see it handled more like jury duty, the representative just gets picked at random from the pool of 30k. Or maybe randomly select 10 people, and that's who we get to vote for. Then after 2 years, they get to run for re-election one time, and if they fail to get a majority, we randomly pick another 10 candidates.
The problem with random, is that people just won't believe it was random.