At a minimum, I would like to see laws that require these companies to charge you interest at the rate in effect at the time of the purchase. That would allow them to raise rates on customers they believe are a credit risk, without making you pay 27% on the $2000 tv you bought when they sold you on a 10% rate.

Would it mean being charged at multiple rates for balances? For some, and a bit of a hassle for the lender, but I know of at least one program that has been able to do it for decades.