teitan
Legend
I think the DMG is incredibly valuable content. Too many people downplay it but tell me the rules for experience or how to customize monsters. What are the grim & gritty rules? How do you make an intelligent sword? How do you design an encounter? How many encounters per day is the expectation, it’s not one balanced encounter.It's never about too much content. It's always an issue of good content.
So far, the list of 5th edition books that I consider useful are the Player's Handbook and the Monster Manual.