Good idea, and not just for ZY.
Re: licensing, it's only an issue re: trademarked titles, not the art.
You can get round it by not including a game's title. Also, for non-original themes where the copyright doesn't reside with WMS / PPS, most IP holders would likely consider it transformative, and too small to mess with in any case.
Only issue I see is that Stern may not like him doing this.