A debt based country will never be fixed, however, progressive taxation has been shown to alleviate inequality, give greater funding to state programs, etc, etc.. You can't honestly tell me the inequality in this world is justified?
I can't fix the world but US already employs a progressive tax system with the top 10% of earners carrying 70% of the federal income tax burden.
So what would satisfy you? 80%? 90%? 110%?