Dropping things from yaml in general always makes me a little nervous. I understand why you'd want a UI for configuring things, especially for new people. I support that.

But, there are down sides. For example, I was using scrape to get some stuff off a page, and doing it through the UI took a long time and was prone to errors. It would have been much easier and more reliable to get it working once, then copy and paste and make the one or two changes each individual item required. But that's not an option as far as I can tell.