Don't worry too much about missing or empty elements or improper values at this stage of the review. Deal with those later. This should be informative. It's going to show up as the title of the web page that mp generates, and it will be the only thing that shows up if this record is returned from a search of the Clearinghouse. The coverage name by itself is not enough.
Any text is permitted, but it's best to be consistent with what other people have written before.
That way people can get it easily. This is not strictly required by the Standard, but it really should be. Don't accept metadata without it. Frequently what's written here is meaningless. If it doesn't give you any useful information, delete it.