Ask HN: Content Design Service?

Howdy folks. I'm a designer/developer looking to move toward doing more design/illustration work. I've been tossing around the idea of offering content design for online publishers (i.e. bloggers, startups, small/medium businesses, etc...). I feel like a lot of companies are beginning to understand the importance of design when it comes to getting prospects engaged with their content. I feel like content design can add a lot of value to a brand's image. Sites like SumAll and Quicksprout are using content design quite well.

Currently, my service ideas are along the lines of: custom designed blog post images, infographics, social media images, and ebook design/layout.

I'm interested in any feedback you can give me. Do these service offerings interest you? Is there something missing? How much are services like this worth to you? Is content design something you struggle with at all?

Any input would be greatly appreciated.