I think that it would be financially beneficial for both Logos and the publishers if journals and magazines were released same day in Logos as the paper/pdf versions. For instance, members of the Society of Biblical Literature have the option to get the PDF versions of The Review of Biblical Literature, so it would not be that much more to get a Logos release. This way, when the periodical comes out, it automatically downloads via Logos. Biblical Archaeology Review and others could do the same thing.