Flowbuilder: Improve Usability for adding custom fields (with identical title shown to end-user)

The following usability issue made it difficult for me to get started with Flowbuilder:
If you want to add a custom field in Flowbuilder, the custom fields are only listed with the title shown to the end-user.
However, this title is - in our scenario - very, very often identical - see screenshot below.

Is it possible to:

• add the "normal" title or the Field ID at the filtered results additionally?
• search a custom field by Field ID?