So I am in the US, so when I go to the homebrew shop, everything is in pounds and ounces. My RoboBrew has marking for gallons and liters. As you can see, it is much harder to guess the volume between gallon markings than between liter markings. I measure my grain in pounds, but I want to be able to measure my water in liters. When I am building a recipe, there is an option in the fermentables section to choose a variety of measurements, but in the Mash Guidelines, it is either US or Metric, but not both.
I would like to see the dropdown option in Mash Guidelines to use either one, without having to convert the entire recipe.
I also buy my hops in ounces, but measure in grams as my scale is far more accurate measure in grams than ounces. Again, having the dropdown here makes it easy to choose.