I know this post is talking about the ebooks themselves (format, DRM, retailers, etc.), but I'm continually frustrated by the lack of different e-ink format dev

I know this post is talking about the ebooks themselves (format, DRM, retailers, etc.), but I'm continually frustrated by the lack of different e-ink format devices. I would love to get a large, low-power device that I can hang on my wall. There was so much promise for both the ebook format and device, but it seems to have fallen flat.