I'd love to see a MMM book. However, I know he's also expressed his disdain for other "financial independence" gurus who themselves are already millionaires and financially independent but they still hawk their wares and try to get people to buy their books or pay to attend their conferences or whatever. I think he wrote a blog post about Dave Ramsey that touched on this.
Here's a secret for you.
"The Military Guide to Financial Independence and Retirement" works even if you're not in the military. It's at more than 90 libraries across the country.
It doesn't have four-letter words or terms like "complainypants"-- maybe I'll upgrade that in the next edition-- but all the royalties go to Wounded Warrior Project and Fisher House.
But, yeah, I'd be interested in reading a MMM book too. However I suspect he's had his hands full with other types of construction projects.