Make the "Column Name" the standard when inputting a dropdown / slicer visual

When i'm creating slicers as a dropdown, I want to do it as slick as possible. I don't need headers or titles or that kind of stuff. But then it is impossible to see on what you are slicing, because by default it says "All" in the dropdown menu.

The best way to fix this is when you import a slicer as a dropdown for with example the "Categories" in it, the default display should not be "all" but should be "Categories". On that way i can put all my dropdown list beneath each other very neat.
Or a different possibility is to let the users deside themselves what text should be in het dropdown list as the standard. Just like with Titles, headers etc where you can put your own text.