DB_DataObject_FormBuilder frozen link fields

Hi. I noticed that when a field is not declared as a userEditableField and it's a link, frombuilder builds a select (or radios), fetches the linked records and freezes it. Do you see any good reason not to create a static field instead and fetch only the linked record (if it exists) in this case, which can be (dramatically sometimes) cpu/memory saving? Do you think it's worth submitting a patch ?