What can you do to make more content available (back catalogues etc.)?
What can you do to standardise formats?
What can you do to maximise availability? (e.g. avoiding geo restrictions)
What can you do to keep the price below print?
Perhaps these are all in the publisher's domain, but I'd ask them anyway. All that a lot of people want, perhaps the majority, is for ebooks to match paper in availability and price.