I posted this in the comments of the article; but what I would like to see is a link between Google+ and Android Market such that each application I publish creates a dynamic circle. The dynamic circle would contain anyone that has installed my application, if they have chosen to allow it.

Create a system-wide setting in the Android Market around whether to allow this and then if someone wants to get more granular they can use Google Plus. Their email would be masked so that I could not see the address but it would let me contact my customers.

I think this would help address some existing issues while giving Google's android market a way to be very different from the existing app stores.