Will the app site support user feedback so that the developer can get any ideas from the user on how to possibly improve the products.
There is a item in the T&c that requires developers to respond in 5 days but I presume this is for functional problems.
This is more in the line of a wish list. For instance a demo is downloaded of a new product, which cannot save but functionally works. The user says that the ability to amend to values and dynamically would be a good idea.
The developer may think this a good idea and update the application demo. Finally when users and developers are happy, the fully functional version is released for sale.