Script fields got quite some love this year. The ability to add fields from the U is amazing, and the more info view for scripts now allows you to set those fields before running the script.
Having this available as a card would be amazing. It’d omit the need for grouping various different cards together to set each field, as well as likely attached helper entities to them to actually get the input.
Maybe this could even be done for service actions in general? Obviously not all services are really applicable for this, but for example sending a notification over HA would be possible too with a text field, without needing a custom script for it.