Some house rules… we can revisit them if folks don’t think they are working well.
“GRIM AND GRITTY” REST MECHANIC
This is an optional rule in the DMG. Short rests are a day (requiring decent sleep) and long rests are a week. This means you can only regain spells once per week. (Scholars of magic have long wondered why this constraint seems to apply universally, why it is exactly 7 days, etc. Interesting…)
MODIFEID PROFICIENCY BONUS
I think 5e does not do enough to distinguish skilled from unskilled people. So the skill proficiency bonus will be doubled for skills used outside of combat (and will be tripled for rouges with skill mastery or something similar). Some skills, like Acrobatics or Athletics, have application both in and out of combat. This means their bonus can vary depending on the situation.