We want to sell access to private spaces on our site through annual subscriptions. When a non-subscriber clicks on a private space they get a very basic functionality message "This space is private"
But we would like the ability to have on this restricted page some special offer text like you might find on pages like the link pasted below. Is such a thing possible or planned? There could be many way to achieve it, as a WYSIWYG that shows up under the Make Private button in settings, or in the Customiser for a Private Space?