I just noticed this feature for the first time today and gave it a shot on Bookshop.org, to erase the little promo box in the bottom left as well as the email subscribe modal that popped up afterwards.
- It can take a few tries to hide everything if, for example, you identify a close button before the outer shape.
- I'm left with something, IIRC, like "5 elements erased" and the option to undo, but no means of editing those elements or understanding what was blocked: is it the ID, the class name, the entire tag? What if those tags are dynamic?
- After I hid it and refreshed the page, the element came back.
We're into pretty savvy territory here with something named "element eraser," that we're hiding elements. I'd love to be able to get at these and target the CSS classnames or IDs or other CSS-type identifiers myself, and to edit them in a way that isn't an all or nothing undo.