A number of threads, reviewing and decision making for the Augen The Book are out there. But I didn't see anything talking about upgrades and aftermarket. And thats where I'm at with mine ...
Cases - Fortunately The Book comes with a decent case. But I'm always on the lookout for something new. Especially because ideally, I'd like to have a few slots for SD cards, a pocket for headphones, and a kickstand type setup that can do both portrait and landscape. Ideally

But The Book is odd shaped. Either taller or skinnier than others. So finding a suitable case/sleeve is tricky. Know of any?
Firmware/software - I'm ok with most of it. Ideal? No. But functional. However, I'm curious if, since it's Linux based, anyone's taken on updating the firmware themselves? Or at least some parts of it? I'd love better video and music playback. Or image zoom functions that allow for four-directional scrolling. Etc. Anyone?