It's not allowed to add my own stories to this group, and impossible to add anyone else's stories, because the fimfiction user interface doesn't allow that.

I'd add The Last Dreams of Pony Island, and some others.

7723711
I've just managed to add The Last Dreams of Pony Island to The Poetry Group Champions. Not from here, though: I had to go to the story page and use the "Add to Groups" feature. However, that seems to have worked fine.

7723883 D'oh! Thanks!