Wish you could disintermediate credit card fees. I'm sort of hopeful that credit card surcharging might grow (https://www.cardx.com/) and start competition on those costs.
This also makes me more aware of my spending, since I need to manually keep topping up the account.
I haven't used a debit card in years to maximize benefits (altho I sometimes use cash when required by small businesses), but the Capital One debit card advertises $0 Fraud Liability https://www.capitalone.com/bank/debit-card/.