Short version of Scrum Guide. 5 pages, not 17. It can be printed on every wall, even memorized.
Current version of Scrum Guide is perfect. But we can additionaly create short version. It can fit in 5 pages I bielive. Then it can be printed on wall of every scrum room (we can even send a nice printed copy for free) in the world. And 2nd benefit - it can be memorized by every Scrum master.