Meal Planner: Generate a Plan

I would love if we could generate a meal plan for the entire week based on the recipes we have saved already. It'd be even better if you could generate a plan based on different parameters, such as only include recipes within specified nutrition goals (IE minimum protein, max/min total calories, etc) or like only recipes within a specific cookbook/collection, specific tags, etc. An option to "shuffle" recipes within those same parameters, and then the ability to "save" your selections once you're okay with what's generated. It'd be cool if the meal planner had differentiations between courses, too, to make it a bit simpler to look at.