the core problem with college loans is that they are non-dischargeable. this means that no matter what the student's ultimate financial situation (long term unemployed, finances wiped out, etc) they still have to pay down the debt, and it can't be wiped out in bankruptcy.
This stands in contrast to virtually every kind of loan out there, which can be discharged (written off). As a result, there is less risk for the lender to give a loan to any old fool out there, regardless of the major they choose, regardless of the quality of school they go to, etc. anything that might correlate with the ability to pay it back.
you might say, great, they don't discriminate against liberal arts students at no-name schools. and that might be something that suffers if reforms were made. but perhaps that student might be better served if funding were hard to come by. complain now versus complain more later, kind of thing.
the great sin in the student loan market is the online degree mills, which target relatively vulnerable segments of the population, all funded by loans. for example: did you know that online universities cost almost the same as physical ones? that makes absolutely no sense when you think about it, but i don't think many of their students do. online only should be a fraction of the rate.
Perhaps the online university is a market to be disrupted. not unstructured MOOCs, but credentialed degree schools that are a fraction of the cost of current ones. i can see the ycombinator startup already.
and student loans should be dischargeable. it's the only fair thing to do.