Incenjucar
Legend
Really easy to house rule, but I certainly prefer a lower rate for the baseline.
The reasons to keep it "full hp" mostly boil down to simplicity, AFAICT. Which isn't an unpersuasive argument, but longer healing periods are hardly exceptionally complicated.
Buh? Full HP recovery with a night's rest actually encourages the 15-minute adventuring day. There's very little cost for resting, so there's every incentive to do it when you've blown your spells. Having it take a few days would ameliorate that.
Extending recovery time just turns "We leave the dungeon for the night and rest at the inn." to "We leave the dungeon for the week and rest at the inn."