JMHO, but a basic introduction is sorely needed. I just came down the path of looking for standardized, or even agreed, intro to Buddhism materials. There is a zoo of stuff, much of which explains very little. The advice is everywhere to postpone (or select) your tradition of choice, choose a teacher with due care, etc., yet there is no guideline for doing that. And people brand new to Buddhism lack the knowledge to make such decisions, the nearest teacher of any kind may be 100 miles away, yada yada yada. There is a very good case to be made for some standardized materials that are accessable everywhere. Maybe the internet will prove to be the university without teachers or walls for such an attempt.
However, graduated instruction can also become a slippery slope leading to the ills of modern "religious vocations" and hierarchies. Who will agree on the standards, who will enforce them. What kind of robins-and-sparrows hierarchies will emerge or be necessary to maintain the system, etc?
My guess is that it has been tried and failed somewhere in the last 2500 years. But now we have the internet.
Of course, with my preference for the Forrest tradition, I won't see whatever is agreed upon and published