I think this is a great idea, mostly because anything that calls attention to “…and this causes a problem because…?”
(You probably don’t know this, because you don’t/can’t come to the December story creation events, but Jim has this tattooed on his bicept! Whenever anyone forgets to add this, he sticks out his arm and tugs up his sleeve. It’s a move reminiscent of an anime character with a curse written on his arm, coming to seek revenge.)
Anyway, there is still a problem with your solution.
In the same way that “Avoiding the killer” could be the problem or the solution, so could “calling attention to the dragon” or “losing a story”. It’s not a problem until the author remembers to make it a problem.
Gists themselves are neutral.
The solution is simple (but would take up space on the screen): The gists have to be listed under a “…and this causes problems because…” prompt.
Like this: