I read a nice article on Slate, saying that Democrats can gerrymander the hell out of blue states now and counter all the Republican gerrymandering. The Supreme Court says it is okay, so stop trying to be fair and go for it! Democrats have mostly been promoting fair redistricting recently, but with the history of Republican mischief (not to mention the new evidence) they can stop their unilateral disarmament policy.
Funny thing is that US House Representatives don't do the redistricting. State politicians do, and state supreme courts ultimately rule on the map acceptability. So it is an imperfect feedback loop: If you have a Democratic majority in a state, you can get new district lines drawn to favor Democrats. And to get a Democratic majority elected in a state, maybe all you need is a bunch of Republican overreach and criminality at the highest levels.