Many times I found myself creating the same identical field for multiple content models. 90% of the times it happens with strings and images.
If the field has an extensive validation and presentation or, if I need to ensure that the field ID is consistent across the models it becomes time consuming copy/pasting the validation, the presentation and checking if the field ID matches.
Blocks are amazing for loops but sometimes one field is all I need to add.
Cosmic CMS has a similar feature named Meta fields where the field is set once and then used in any model.
Thank you very much for your attention and for your incredible product.