I would like to suggest one idea which I believe might be useful. Currently in card security settings I can disable all e-commerce transactions. This is good and safe way to prevent my card to be used without authorisation. So my default option would be to always disable these and enable only whenever I need.
But also I would like to use my Revolut card to pay for some subscriptions (kind of direct debits), for example Spotify, Lynda, etc., which occur on month to month basis on various days. And if I block the e-commerce, these subscriptions fail to be paid. It would be very useful to have a list of authorized payees, which are paid even when the e-commerce transactions are disabled. Also would be good to have the option to set the maximum limit per transaction.