When dealing with large forms (like on a real-estate website) it would be great to group/separate fields.
In my example the "listings" collection has over 30 fields. When you present that form to the user, it's just a wall of inputs and it's a little daunting.
Groups (with titles) would allow us to visually separate (or even paginate) form fields so the UI is cleaner and easier to navigate.
Rough idea attached.