Google Structured Data, if you are not already using this you are missing a trick. though there is no evidence that using structured data to markup your content has any effect on ranking, we assume that it does affect the number of times that users will choose to follow your links in the SERPS.
Click through rate is something that Google monitors, so if you are giving users what they want at the end of their click, and they are sending signals to google by the way they interact with your content, these signals are likely to affect your position over time.
Also Google are fast developing ways to extract information about your content that does not rely on links and keywords so it follows that the best path to follow is one that provides Google with as much information as you can about content your content. Read and learn, it's a job worth doing.http://www.siliconbeachtraining.co.uk/blog/structured-data-markup