If it had an SD/microSD reader, the openness would make me what to pre-order one. I can just imagine the 8GB internal storage quickly running out with all the extra stuff I'd want to do to it.
It might be possible to add a usb-c flashdrive. I'll let you know in a few weeks when I get mine. In any event, document storage of 8GB is quite a lot - I have many pdf textbooks on mine.
My collection of ebooks is about 50 GB. Once you get into art-heavy PDFs like those for tabletop games you can be looking at 5-25 MB per file, and that adds up fast.
