I actually think it’s a sign of progress that we’ve started to see Virginia-based Republicans make specific complaints about specific Democratic proposals to restrict gerrymandering. It’s true that defining a “fair” map is hard, and that it can also be hard to make sure a policy intended to produce a certain kind of map actually produces them in practice. I don’t expect Republicans to simply pick up a Democratic piece of voting legislation and pass it wholesale, but this would be a great thing to hash out in a legislative negotiation.