How about we add an Idea Folder (which is up to Alex as to where to place it)? Users can submit a paragraph or two containing their ideas for other users to use. Then users can go through the Idea Folder, and if they found a suitable idea, they click a button call, "Take it" to take the idea, so that the other users don't copy. And if they are not able to finish the game or gave up, they can submit the idea back.
Also, I think the Idea Folder should be in alphabetically order. And you need a decent title for the idea you submitted too, I forgot to say this.