For sure you’re regularly in the need of listing particular elements, finding where an IX trigger is, listing all the symbols, finding or making sure there’s a custom code block somewhere, updating all the links…
And you whish you had a search feature in the Designer.
However, this must be difficult to develop. HTML is a flow of elements. So the position of elements depends on the elements before them. Removing some can lead to a giant mess.
This should be very simple to develop… The toggle should simply hide and show the element. No problem if the element causes the reflow of the document - actually that’s the goal. Example: I design a wizard with 3 steps, so I keep all steps in one wrapper and use custom JS to show or hide specific step. Now I can do this by adding a combo class “is-hidden” with “display: none” but it would be much more productive to toggle this with a keyboard shortcut. So that I can just traverse the DOM with arrows and then hit Cmd+H to toggle visibility of selected element.