Field which data type is [Lookup], you can display [Field Properties] at form customize and change the dialog view at [Default view] on [Additional Properties.] But if the data type is [Customer] field, [Additional Properties] does not exist and cannot be set. Selecting entity or view every time is troublesome. It will improve convenience if the user can set frequently used view. It will be useful if a function that the default setting of dialog can be changed like [Lookup] field is added to [Customer] field.