I was about to post this in the New Editor Theme thread, but then thought perhaps it's not really related, so I created a separate thread instead. I often find myself expanding arrays to see how many elements are contained. For me, an UX improvement would be if I can see how many elements an array contains, without having to expand that array first. This is how an array is displayed in "Unity 2019 UI Preview" today. It does not give any information about the number of elements. Here is an idea how to visualize the element count of an array, without having it to expand first.