Of course, this includes more traditional editor roles like proofreading/structuring the text, but the main focus is on following:
- finding, sourcing, adding proper images
- adding outbound/inner links to relevant sources
- coming up with ideas to add supplementary content/media to articles ( graphics, lists, videos ), whatever makes the content more useful
- optimizing content for search engines
The end product should be article which is ready to publish without requiring any further effort on my part.