It's the answer to all our problems, an answer so obvious I don't know why it never occurred to anyone before:
No more freshmen.
See? Absolutely revolutionary. No more freshmen means no more problems with freshman/sophomore retention rates, no more desperate searches for adjuncts to cover excess sections of freshman composition, no more frantic attempts to revamp the first-year program, no more hand-wringing about lack of preparation among first-year students.
Because we'll have no first-year students. We'll admit only sophomores, who will all be thoroughly prepared to dive into second-year coursework.
Brilliant! Innovative! Thinking outside the box!
But until someone takes up the cause and puts this plan into effect, I guess I'll have to go back to educating the students I have. Even the freshmen.