I'm not exactly sure what you are saying as the wording is hard to interpret, but first of all the Kindle DXG is not "mythical" as it has been released for general sales and many of us already have one. I definitely agree that it could have much better PDF support, but so could most, if not all, currently available e-Ink devices. I doubt e-Ink technology and readers will ever come close to the PDF support found on computers or even the iPad. If by ADE support you mean ADE PDF support then that would be nice, I'm not sure what support is native for PDFs on the KDXG.

If you mean ADE ePub support then that would be terrific to have. No doubt Amazon wants to sell books as that is their "bread and butter" profit area as for as books and readers goes. If they could secure deals with publishers to sell ePubs too, and I think they could, then they would probably have greater book sales volume. If they would add ePub support for DRMed and nonDRMed ePubs to their readers that would be really terrific. I personally wish all of the major players would settle on one format like ePub and let third-party developers create apps for their readers so that we have a choice in which app to use and on which reader device to use it.