When I am developing themes, I often prefer to write the markup first then create the custom fields based on the field names I have used in my PHP/HTML.
It would be really handy to have the Field Label auto-populate from the Field Name if the Field Label is empty. This would enable me to copy the field name from my template file and get a field labelled based on a capitalised, underscores removed, version of the field name. I.e. copy hero_image
from template into ACF UI field_name text field and it populates the field label with “Hero Image”.