I would like to recommend the following enhancements to the Custom Fields power-up:
- Create sub-categories of input types. e.g. New Field -> Text Field -> Phone Number. Automatically formats 5551234567 formats to "(555) 123-4567".
- Enable regular-expressions option to text field to let power users format input any way they want.
- Allow Text fields to accept markdown formatting.
- Please allow a phone number detected in a card to dial with a singular iOS prompt. Phone numbers are currently detected in the iOS app in custom fields but it requires 4 presses in order to initiate a phone call: Press the number, press "open", press "yes" to the confirmation, followed by the final iOS prompt to make the call.