I’m not sure if this fits into this topic, since this seems more like a Contribute > Feature request, but I like the idea that when a onebox fails because some tags are missing, the link is shown as an inline onebox instead of the raw link.
So when I post:
https://osmfoundation.org/wiki/Trademark_Policy
The preview looks like this:
But the link in the post looks like this:
It would be prettier if the link would use an inline onebox and look like this:
Trademark Policy - OpenStreetMap Foundation