Personally, I like the leichter to be set up specifically as a “zechus mitzvah” for the next Shabbos. My husband handles this tafkid, so it gives him the opportunity to actively participate in specific Shabbos preparations. That is not to say he doesn’t help me in other ways, too, but this is his “baby.” And don’t we daven every day “hayom yom… ba-Shabbos?” We are supposed to be thinking every single day, of the next Shabbos, so why not immediately AFTER Shabbos, in a meaningful way that actually impacts on the Shabbos?