Sure, I'm just pointing out that there is also the issue with geography of a timezone: on the western edge of a timezone the sun is 45-minutes to an hour-later

Sure, I'm just pointing out that there is also the issue with geography of a timezone: on the western edge of a timezone the sun is 45-minutes to an hour-later and a move to permanent Standard Time as an example counter-alternative would have similar implications for the other side of a timezone. (More people getting up before sunrise not just in all of the Winter, but also large parts of Spring, and Fall.) Neither permanent answer is great for the entire hour-wide width of today's timezones. In some ways the DST switch is a large part of how we can sanely keep such large timezones at all.