Erm well, if you don't know what users want, why not ask, or collaborate with people who will do so on your behalf? (then again I would say that, since it's what I do) Seriously though Mark is right, all my experience suggests that most people tend to want more not better. But then there is of course a conflict in terms of preservation quality and that of markup and editorial standards. Most users also want to know that resources will still be there in a few years when they come back for them as well, which of course relies on high quality data and metadata standards in digitisation. Scholars and archivists tend to want one thing and users the other. There is, however, a difference between raw digital content and edited resources such as this. Users want lots of raw content, but scholarly users expert in a particular area do appreciate the importance of properly edited materials. So here again there is a conflict, potentially between your expert users and those who are making less complex use of the materials. The only way to make informed decisions about how to handle this is of course a user study!