Interesting... what sort of thing are you thinking of: the ability to easily manage subscriptions from within an app, or view content, all of the above?
What I think small publishers would pay for is code that automatically sets that up for them. For example, something that generates the html that sets up a Newstand page inside the app, and then allows me to enter my information (where my files are stored, price, etc) and then shows me where to insert it into the code (or does it for me). All I would need to do would be to upload my issues to my website. Basically, help people sell their magazines, and people will pay you for it.
Feel free to PM me if you have any questions about the issues we have been having.