Currently, if a user wants the most accurate result to their current progress in game, they have to uncheck all recipes they don't have access to due to missing the required tier or assembly phase. This is extremely tedious as there are a lot of recipes in the game, especially for alt recipes because the user might have to check whether or not they have a certain alt recipe.

Therefore, it would be great if a feature was added where the user can select the assembly phase they are currently at and which tier/milestones they have completed in order to filter out all the recipes they can't have due to not meeting the necessary requirements, either because the alt recipe isn't in the pool at that tier or because they don't have the necessary building unlocked (some alt recipes, like wet concrete, can be unlocked before having access to refineries for instance)

The best place to add that feature, in my opinion, would be above the recipe selector. After the user selects the milestones and tiers they have completed, the application should then hide and disable all the recipes the user can't have access to due to missing prerequisites (unlocked buildings or recipes missing from the current pool)