New difficulty

As we all know, there is no such thing as between peacful and easy difficulties. However, if we had something like peaceful+ for example. My idea is that hostile mobs still spawn however they would be passive hostile or also know as neutral (attacks when provoked/attacked) or not attack at all depending on options. Bosses unchanged from peaceful. This would be a great way to make worlds set on peaceful+ feel way more alive and would be perfect for casual players when they need resources like gunpoweder which is a challange obtaining in a peaceful world or people who are simply trying to improve. Many mechanics from peacful will remain unchanged such as the hunger not deplating and faster regeneration. This will keep the feel of regular peaceful of not having to worry about dying to mobs whilst still having an easier way to gather needed mob drops like string and even make different types of farms like EXP or raid, etc.