I'd really like to see a college open that was really interested in making an investment in its students. Tighten up admission standards then offer only financially viable degrees and free tuition and books while attending school. Once you graduate you give a percentage of your gross income back to the school for the next 10 years.
This wouldn't be a government mandated thing, just something the school does on its own.
The entire paradigm of college education would be different with a system like this since the college has a vested interest in making sure the student selects a worthwhile degree, attains employment, and earns a lot of money. The school would offer resume writing, interviewing, and negotiating workshops, REAL job placement assistance (not the limp dick garbage colleges offer today), and so on because they want the student to graduate and earn a good living since it increases their return.