The introduction of a recurring payment system is definitely optimal.
I also think of a Hive card for payments with Cashback (I also mentioned this idea for Leofinance) because I think it is a big incentive to use crypto, compared to FIAT credit cards (which even have a monthly cost)
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That gets into a whole lot of difficult areas. Having a credit card means, in many countries, having to adhere to the banking regulations.
Besides, it might be tough to get others to accept it. I am not sure you can just latch onto the Visa network.
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