For the people making the "it will take some adjustment, but eventually people will get used to it" argument in favor of either making DST year-round or scrapping it entirely, then why not take a bigger leap and just make the entire continental U.S. one time zone, like China does, and allow people and companies to adjust their local schedules to whatever is best suited to them, regardless of what the clock says? I.e. people would still get up and go to work or school at the same time as before, regardless if the clock now says it's 4 AM or 10 AM instead of 7 AM.