I think the only tenable solutions are 1) a ceiling on the loan amount tethered to public college costs to increase price elasticity and prevent runaway costs, along with a quota on loans to address the 'future ability to repay' issue with many majors/low caliber schools 2) free public college (or equivalent private college voucher)
Giving out loans with no cap on how much schools can charge and with no ability-to-repay check is a recipe for catastrophe.
I think option 2 is the best equitable outcome but is probably politically unsavory given the heterogeneity in public school costs/quality across states (which typically aligns with political divides).