I was hoping that the ISAs would fix the worthless-classes problem. My theory was that if the institution's compensation was more directly tied to how much they helped the student, they'd be better at helping students.

Unfortunately, there's still a fundamental broken feedback loop here: the people purchasing an education are definitionally unqualified to evaluate it. I don't see a way to fix that without significant regulation, which unfortunately acts as a brake on evolution of both program content and educational methods.