It would be great if each layer could be toggled off/on for all pages at once for things such as markups and guides that don’t want to be printed. Likewise, I would like to see the ability to toggle off all the layers on the current page with one button. Then bring back individual layers one by one.
In the most recent version of LayOut, you can select multiple pages, select multiple layers, then toggle the visibility of those layers on all selected pages at once.
Sorry I’ve bumped this up but I didn’t know about that. It’s useful!