Lots of content is great for search engines, but how you present it determines your conversion rate.
Reading on the internet tends to be the fast food version. Try mixing it up by creating bite-sized reading: headings to grab attention followed by short descriptions and “read more” links; use smaller paragraphs; try point form (lists) and interject enough ‘call to action’ content (links in the paragraph, banners, etc.) to encourage some clicking. Add enough banners to create visual interest, but not so many that they blink your visitors into seisures.
Mix up text links with banners. More people tend to click on text links (trusted more) than they do banners, but banners add excitement and interest to a site.
Having said that, maybe I need to do some sprucing up on my sites. LoL