Somebody said to start a new thread about desired features, so here you go. 
I would really like to see the ability to customize the bookmark cards – OR, to have two different kinds, one for external bookmarks and one for internal.
I’d like to be able to specify what goes into each one. Internal ones would need the category(s), the author, the excerpt, and the featured image. External ones would need the publication, the excerpt. Both would need the title and the link, of course.
And yes, I know this can be done with custom HTML cards – but so much easier to just paste the URL and have Ghost figure out if it is internal or external, and add in the correct card.
There you go – a request for V6.