I love the ability to tweak brewhouse efficiency in the recipe editor in Brewers Friend. I'm creating a recipe today and while I was working on it I had a few thoughts. Why not take the average of your last 5 or so brew-sessions and offer an automated brewhouse efficiency average (maybe 95th percentile?) to put in when creating a recipe? I usually go back and look at my last 4 or 5 sessions and estimate what my efficiency will end up being so I can hit my expected gravity as closly as possible. If BF either automatically placed an average, or offered it to you to enter if you wished during recipe creation, I think that would be a great addition.