That would certainly balance the wear, but the difference side to side on mine is very minimal. It only becomes seeable if one is actually examining the wear.
Side to side across each tread is perfectly even.
I drive 30K-35K each year, which takes most of the life out of my tires anyway, and I like lots of tread heading into winter, so I put new rubber on in October or November every year. To me tires are the first line of defense against winter accidents, so to me it's worth a few hundred a year to prevent them.
I actively and routinely keep track of my wear, but as a symptom of any developing problem rather than to get the max life out of them. Most folks. I realize, are after tire life and cost, and I respect that. I'm insecure. I'm more interested in good traction than in saving a few bucks.