Some mighty big hitters in the sphere have advocated what I proposed. https://en.m.wikipedia.org/wiki/Full-reserve_banking

- Economist Milton Friedman at one time advocated a 100% reserve requirement for checking accounts,[8] and economist Laurence Kotlikoff has also called for an end to fractional-reserve banking.[9] Austrian School economist Murray Rothbard has written that reserves of less than 100% constitute fraud on the part of banks and should be illegal, and that full-reserve banking would eliminate the risk of bank runs.[10][11] Jesús Huerta de Soto, another economist of the Austrian school, has also strongly argued in favor of full-reserve banking and the outlawing of fractional reserve banking.[12]

The 2008 financial crisis has led to renewed interest in full reserve banking and sovereign money issued by a central bank. Monetary reformers point out that fractional reserve banking leads to unpayable debt, growing inequality, inevitable bankruptcies, and an imperative for perpetual and unsustainable economic growth.[13] Martin Wolf, chief economist at the Financial Times, endorsed full reserve banking, saying "it would bring huge advantages". -