We understand the requirement. Essentially you are asking for -
1. Creating templates - basis which the input fields will appear and will control the card layout
2. This functionality should be extended to all logged in users and not limited to the administrator.
3. The output of the final card would probably be in a format expected by your printer (that will need to be known and addressed, in advance)
While we do have plans for introducing generic templates in the later part of this year, the ability for a logged-in user to do this is something that we haven't even considered and may not introduce in the plugin.
If you are looking for this custom development, may I request you to get in touch with us via sending a mail to - info [at] wisdmlabs [dot] com.
We can certainly discuss this in detail, firm up the requirement and address commercials and delivery.
We look forward to hear from you.