I find myself mostly setting the same production limits for stuff like building materials/fuel/refined food, and it's kind of tedious having to rewrite them manually every game, would be nice having them persist between settlements (maybe in the form of an optional setting)
Hey! There is an option for that in the options menu. You can find it under General > Gameplay > Auto Load Recipe Limits. If you set this checkbox, global limits from the recipe panel will be loaded in every game you start.