Were you aware that search engine spiders love fresh content and the more frequently you update your content the more frequently spiders traverse your site?

The advantage of adding fresh content frequently directly impacts your topical site synergy. By creating islands of topical (related) information on a subject provides each page with an opportunity to pull its own weight and rank on its own constitution as a contributing factor to your traffic and exposure.

Without updating your content, or having aged content on your site that could benefit from a content and link audit you are implying to search engines that proper on page factors are not a top priority.