Loving Kagi Discover!
I think what would be useful is having a way to mark a story (or stories) as 'read' - currently the only way this can be done is by clicking on it, but there are stories that are either repeats (similar sources) or I'll never want to actually read, so it would be good to mark these as read to essentially dismiss them.
Kite already has this functionality, where you can tick on the side of the article to mark as read (or mark all as read at the bottom)