Also, this thread was originally prompted by the idea that it would be good for borrowers if they could get a right of first refusal on any resale of their debt. There's a question of whether more selective lending is in the best interests of such borrowers.
As much as being in debt sucks, many of these borrowers would prefer to be in debt than not have had access to borrowed money in the first place. Moreover, this would make life harder certain borrowers who would pay back their debt but can't get a loan because they fall within whatever statistical grouping or heuristic lenders are using to minimize their losses.