1. The traditional 200 on page/on site elements. The most important? Title tag, H tags, robots.txt, sitemap.xml, cross linking within posts.
2. Inbound links. Nothing has changed except that links are not the only game in town and if you abuse them Google will abuse your site.
3. Social Noise
4. NAPS/Citations
5. On Site/Page Metrics. Time on site, pages visited, bounce rate.