No, this won't help News rankings. We extract geography and location information from the article itself (see video). Changing your name to include relevant keywords or adding a local address in your footer won't help you target a specific audience in our News rankings.
We want only the most recently added URLs in your News Sitemap, as it directs Googlebot to your breaking information. If you include older URLs, no worries (there's no penalty unless you're perceived as maliciously spamming -- this case would be rare, so again, no worries); we just won't include those URLs in our next News crawl.
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