Thanks for the response.
We currently use a subdomain for a blog, because we could not host the blog within the ecommerce software. That is blog.domain.com, and we use that for some content marketing.
Our product line is in the health category, and naturally has quite a few components to it that are worth creating basic content about. We are looking at doing a sort of an A-Z guide that we can host directly on the website, and not the blog.
We do not have any content that would be affected by moving the ecommerce software to a subdomain. We have very few pages that have utilized the ecommerce package's url structure, and any pages that do use it, are ones that have little SEO value. We would like to improve the amount of original content with our main domain along with our blog.