The print textbooks used in schools in several parts of east Asia have had a rational production process like that (hire experts to determine what is really essential content, and then have pedagogical experts work out the best way to present the content) for years. That's one of the big reasons why, even when Japan, Taiwan, Korea, and Singapore were poor countries (are you old enough to remember those days?), they made good educational progress through effective schooling for the broad national population, and why none of those countries are poor anymore. The United States is still too "fat and happy" (I like that dialectical English term for "complacent") to do something as efficient or rational for its school system.
Worse, this is effectively what you already have in state school systems like Texas where you have a committee approving the sanctioned books for the public schools.
The results of this is the inclusion of intelligent design, downplaying of evolution, etc... etc..
If all you have a hammer, everything looks like a nail. http://en.wikipedia.org/wiki/Law_of_the_instrument