I just published a minific called The Truth, on the subject of cutie marks, progress and ultimate truth. It's not really developed well enough to be a fic in its own right - I'd need to do more to put the characters in context - but I think it works as a "what if" story.

I was bowled over today to find that the wonderful Dr Wolf has made an audio reading of The Silent Patient. It sounds fantastic, so check it out.