Display Custom Field on Issue Card

[yennor]

Is your feature request related to a problem? Please describe.
I'm using a Custom Field for Budget, which can have values like "estimated", "awaits permission", "permited".
It would be very cool if I could choose to show the value of that (or other) custom fields on the card.

Describe the solution you'd like
It would be possible to choose which custom fields to display on the cards.