You could do something very similar to that using a group field with the add_more option turned on. From there, use a conditional for a select field (or something) to determine which fields to display.

Without doing something very clever, it won’t work quite like what you’re seeing in the video in the link you’ve provided (columns, etc.). Honestly, though, I rarely offer that level of customization. I have complex fields, but it’s more to guide the user through an existing design. I use Piklist to provide the exact sorts of fields that will help the user customize within the design, but not break outside of it. That way, no matter what they do (within reason) the site will always look good. Mind you, if you’re designing open-ended themes, that can be tough.

So, in short, you can do something very similar to that, but I’ve not personally had a need for that on the 5 themes I’ve developed with Piklist.

Hope this helps! 🙂

Glad to help! Like I said, too much freedom to the user can be more encumbering than liberating. If I want them to have genuinely free control over a section, I’ll use the WYSIWYG.