I was too late to post on the first page, but I’ll try to make the argument for the “most competitive” gerrymander map.
Ultimately, the goal of business, government, economics, science, etc. is to improve the lot of humanity. If they’re a drag on our lives or a negative to society, then the aim is to remove that portion that has that effect and swap in an alternative method that does better. Pure ideals of how things should be, given spherical cows in a vacuum, has no credence versus the actual end effect on the world. If you think you can find one absolute definition of what each and every one of these should be, then you are narcissistic, deluded, and wrong.
In the reality we live in, a lot of people vote based on partisan beliefs that have nothing to do with anything more evolved than the same logic that one uses to decide and support their favorite sports team. That sort of logic really has very little positive to offer humanity.
In general, what makes for good government is to have a larger audience of voters that do some real soul searching, scrutinizing, and evaluation to pick - if not the good candidate - at least the candidate that is less bad. Regardless of what your personal politics might be, some candidates are simply worse. They are stupid, they are corrupt, they are unmotivated, etc. That’s not tied to any one party, but many people will overlook those attributes if that person is on their side.
With a first past the post system, the political parties will always hold half of everything and they will always win half of everything. If you believe that your political party can one day take over everything and drive the other party out, then you are deluded. The platform will change and equilibrium will be reestablished. That’s just true, so what is the value of voting for your party versus voting for the opposition party? If everyone just voted for the best candidates, half of all of the politicians will be Republican and half will be Democratic, just the same as it is today. But it will be Democrats and Republicans who are smarter, law abiding, and motivated. If you live in a blue district, most candidates will be Democratic, because these are people selected from the local populace and the local populace is mostly Liberal. This is the same in the Republican side. The ratio of politicians by party does not change when people vote for the best candidate, it just improves the quality of our government.
Having competitive districts gives the people who actually give a damn about the qualifications and fitness for office of the candidate a greater share of the vote.
It doesn’t change the end result of what land is red or blue, it doesn’t change the ratio of Republicans in office to Democrats in office, it just makes the world better.