This is the sort of 'cover with light' I would like to see.
(Excuse my pitiful MSPaint picture

)
viewed from the side:
from top to bottom:
- closed up protecting the valuable eReader
- open for hand-holding with light extended
- open for reading from a table (with light extended)
black - the eReader!
red - stiff front and back of cover
cyan - flexible hinges
green - magnetic clasp
orange - light! (powered by AAA batteries for long life)
So - who's gonna make me one?