I’d like the world to agree on at least all changing time on the same day or none at all. So we can just remember the offset to everywhere else just once.
There will be people who prefer reasonably early sunrise to pleasantly late sunset, and we could shift office hours 1/2 hour or so to adapt for people on edge of time zones.
The eastern part of a time zone has earlier sunrise/sunset than the western part of that same time zone. A little past Detroit would have Vancouver times.