Currently, if I'm designing an article and insert an article panel link to a private article, it can look great for me but mess up the experience when that panel doesn't appear for other people, especially if I've specifically alluded to the existence of that panel with subheaders or 'click here for more info' thingies.
When making a normal link to a private article, the link is active for everyone, but redirects those without access to an 'access denied' page when clicked.
I'd like the option to have article panels behave in the same way - visible and clickable for everyone, but redirecting to the 'access denied' page for those without access.
This would bring more uniformity to how article links behave, make the designing of responsive article pages easier, and give authors more control over exactly how the navigation of their worlds is approached.
In addition to linking to making article design more cohesive, this could be used to:
Easily advertise premium or subscriber-only content in a nicer way than a simple hyperlink
Tease for 'coming soon' articles
Mark out space for future article links so they just work when the article is eventually made public, without the author going through every page they want to link to it afterwards to add the article panels in
Hint to further worldbuilding with nice article panels instead of just hyperlinks with tooltips
Add toggles to only show the panels for certain subscriber groups
Make different panels and layouts visible in the same place based on the viewer's subscriber group / login status
This would necessitate excerpts and tooltipster being treated as always public, which I agree with, but that field then deserves a note that it's public.