I think an interesting text.
Last week the Bank of England launched a whitepaper discussing the benefits central bank issued digital currency (CBDC) namely;
Reductions in real interest charged by commercial banks
Reduction in the cost of the using the payment system for participants (interchange)
Understanding the exposure and risk of commercial banks against each other to prevent future shocks
3% Uplift in GDP through exchanging CBDC for Government Debt (bonds)
http://11fs.co.uk/uncategorized/central-bank-issue-digital-currency/