Doug McCrae
Legend
For some reason, I feel that hit points and Vancian magic should recover over the same time period, whether that's a day, a week, a session, or an adventure.Changing the timescale in either direction, IMO, is pretty simple. And I find the weeklong scale REALLY useful for things like training, dynamic changes over time, things like weather, and even simple verisimilitude: the only time when people are up and at 'em again 8 hours after being nearly killed is when there's magic involved.
Maybe it helps balance magic and non-magic guys better, as it's usually the non-magic guys who lose hit points.
A week is pretty good, gives you time to get to the dungeon and back.