Congressional districts are simply too large, these days. Tripling the number of Representatives and districts may sound unpalatable at first, but it would marginalize the radical Leftists, greatly dilute the impact of gerrymandering, and make each Rep more accountable to his/her voting base.
Agreed, but the big problem is the 17th Amendment and Reynolds v. Sims, which forced State legislatures to apportion their Senates by population. Were my Senator selected by the legislature and my State Senator picked by my County supervisor, I could see my supervisor and gain real access to the Senate too. That's better representation than being one of 35 million Californians (or whatever it is these days).