I'm sure this must have been mentioned in the past but here goes again: please do ensure that front matters are properly included in resources, starting with Bibles. These include important information for using the resource.
For instance, the NASB95 has no preface at all. The paragraph edition includes the preface but omits the sigla. Thus, a reader who is not familiar with the conventions used has no means to tell what text included in square brackets means.
Another example consists of some versions of Nestle Aland of whose very helpful addenda were not included in the logos edition.
I don't know how many other resources may be affected by this. I seem to vaguely recall (not redundant) back indexes missing from some monographs.