This pool is for those moments where it feels like something is happening or happened off screen or is mentioned and you wish you could have seen it.
For instance, a character talks about fighting another character, and its obvious from the character's wounds that it was an epic fight. It leaves you wishing you could have seen that.
Or though nothing was mentioned, the context or situations implies something awesome happened when the audience wasn't looking.
Really, if the image makes you think "I want to see that, dammit!", then most likely it should be here.