Originally Posted by Barty
At least make it an option for people who hate the flash and don't mind having to deal with the occasional screen artifacts and manual refresh.
The page transition isn't a fixed sequence as it will vary based on temperature and the individual characteristics of that particular eInk screen. The Amazon default will err on the side of caution to give you a clean display when reading an eBook. You'll notice that it does a significantly faster transition when it is using the browser but you'll also start to see faint artifacts from the previous image/page.
Having an option to alter this isn't a good idea for a mass market consumer product as people will set it to a very low number and then think the Kindle is broken. The whole aim is to get a product that is easy to use and has minimal opportunity for the end user to break it or at least appear to break it.
People already complain about the very faint artifacts you sometimes see when you initially open a eBook from the home screen so making it worse isn't going to be good.