There are different types of readers. Some love short articles that are straightforward whereas there are those that don't mind the long blog posts. As a way of reaching out to all, do you think varying the length and format of the content is useful?
I think that what you suggest is very key in ensuring that you tap into a large pool of potential customers out there. Personally, I don't mind a mix of the two, provided the message gets home in the most straightforward way.
I think that some kind of way you have to figure out what your reader likes, you can't just make a guess. Compare the reviews you received on shorter and longer articles or even do a survey asking the readers which they prefer.