Well, we really would need artistic talent for this... most people won't want to buy something that mostly text.... So, for now, I want to shy away from strictly text-only stories.
that being said, a text-story that is supplemented with art could work. The art does not need to be a literal comic version of the story, but may have scenes, etc.
I hate to restrict creativity, but for a comic book, especially in this method, the more text-only it is, means the more expensive it is... as far as page real estate that is... A full color page is going to cost the same if you use a full-color image, versus B&W text.
Of course, artists are harder to snag for these things, but I want more art before deciding on text-only stories.