Here’s the issue. Some may like the new default UI, but are torn with it because you have to edit the UI for every character. Well, not really. Here’s the way I set the UI for all characters without using the edit mode.
First, on your favorite toon, edit the UI how you like it. Once done, log out and exit the application completely.
Next, on Windows, go to the following (let’s assume your characters name is BOB:
“C:\Program Files (x86)\World of Warcraft_retail_\WTF\Account\ACCOUNT_NAME\REALM\BOB”
Inside BOB’s folder, you’re looking for a file named edit-mode-cache-character which is a text file.
Copy that file and replace it inside the folder of another character, let’s say JANE. Once done, open the txt file up and change the name of BOB to JANE. Save and exit then open WoW and log into JANE and now you’ll have your UI all set to how you want it.
Hope this helps.