It'd be great to be able to remove custom fields from the table view across all visible projects/folders/tasks even if there's a value somewhere in the scope of the removal.
In other words, I'd love to be able to remove a custom field from anywhere. If there is a value somewhere in the scope of the requested removal, I'd expect the platform to prompt me "Are you sure you want to remove? There are values that will disappear."
And I would expect this feature to be limited to the administrators.