In the course of my learning UE4, I stumbled upon the fact that when you copy Widget components from the designer, they go into your clipboard as plain-text. Even more interesting: you can paste the same text into the designer to recreate components. This has also allowed me to share entire widget layouts in text, hosted on pastebin:
This has since become a regularly-used tool at my disposal, as procedurally editing text is easy. That grid panel with a billion tiny sizeboxes? Let me just dump it into notepad++ real quick and made the changes I need. Anyone else find a good use for this functionality?
(Principle reason for this post is to share what I see as a valuable and overlooked feature.)