just as an idea. can be the lcd used as a kind of mouse for the e-ink, with the backlight off? having the unit closed but touching its back to control the e-ink side?
or having it like a laptop, virtual keyboard on lcd and viewing the word processor on the e-ink? it would be perfect for students. BTW I do not think Edge will answer, will recognized the defeat of the internal team and I do not think they are in the hiring and firing season, also they may not afford you?! so what about setting a customized firmware website where we can buy a 50 bucks customised firmware from you? the money will allow further development and offer an alternative to Edge roms. eventually dual boot in the future to ubuntu?