I've always felt the UI of the Layout Designer to be a bit of an odd duck relative to the polish of the rest of the Control Panel. To increase usability, I would propose a layout that more closely mimics an actual entry page.
The ideas are fairly self-explanatory by viewing my crude mockup below.
We鈥檙e planning a big field layout designer redesign for Craft 4 ;)
The next Craft 3.5 release will feature a redesigned field layout editor, with several improvements (see #806, #913, #1138, #2644, and #3953). Decided against trying to style it like a normal edit page, but at least it looks a lot more at home in the Craft control panel now:
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The next Craft 3.5 release will feature a redesigned field layout editor, with several improvements (see #806, #913, #1138, #2644, and #3953). Decided against trying to style it like a normal edit page, but at least it looks a lot more at home in the Craft control panel now: