Could Amazon improve their service for Independent Authors?

Following an email from myself to the KDP team at Amazon, they have reduced the first book in my new Fantasy series Dirt to zero so it is permanently free. This is crucial part of my sell, because as an author it is one of the few marketing techniques I can afford to help sell my whole series.

It made me think about the Amazon KDP offering and how it could be improved to help Amazon, Authors and the vital readers.