Getting rid of gerrymandering is certainly the right thing to do, but surprisingly it won't be as effective at unwinding the mess as you'd think. "The Big Sort" is a big reason why (https://www.npr.org/2022/02/18/1081295373/the-big-sort-ameri...).

Doing something like expanding the house of representatives to several times it's current size would probably help much more.

All these things are a bit academic though, since neither policy is very feasible.