I would LOVE if we could use screenshots in framed paintings. I would love to be able to put screenshots showing my fc's achievements and captured moments from our organised events on the walls of the fc house.

But I suppose the risk is players could upload images that aren't even from the game. I'm not sure how SE could introduce this while eliminating the ability to upload images entirely unrelated to the game. Being able to do so may seem harmless at first but there would be some individuals who would upload very offensive material...and well this game does have an age rating, so that is a potential legal issue.

I have no idea if a game achieved the ability to use in-game screenshots as an in-game asset without permitting the use of images outside of that.