The DCC RPG rulebook is "friggin' 'uge!" Hell, it's damn near intimidating.
The reality is much of that size is due to the numerous spell charts, but until you open the book up you might not realize that.
I think the DCC RPG might be well served by a "Basic Box" or "Basic Set".
Levels 0-2 only.
A small, handpicked selection of spells.
Humans only to keep the class selection simple.
A zero level funnel, two short first level adventures and a short second level adventure - just enough to entice players to move on the the full rulebook.
Everyone knows boxed sets look nice on store shelves, and if the funky dice were included it really would be a complete introduction to the DCC Game.
Hey, a man can dream, can't he?
It's a better option in my opinion to putting out the core book with a new cover every 6 to 9 months...