Provide additional visual filters for Bible eras and liturgical use - think Study Bible feature
Study Bibles such as The Great Adventure have a popular feature of color-coded tabs that go with It would be useful to transfer this concept into Logos/Verbum Bibles as a simple line in the left margin of the text, colored to match the Great Adventure scheme, solid for the primary books, dotted for the secondary.
The same concept could be applied to other timelines from other resources as well as to dispensations, covenants, Augustinian 6-days … perhaps classifying the marginal lines into groups with a bit of an offset so that multiple lines could be shown.
This could be extended a bit further for the liturgical churches with the line indicating only that the passage occurs somewhere in the lectionary without attempting to code season or use.
If you are unwilling to make these filters, at least make it possible to have multiple vertical, non-overlapping, colored lines in the left margin.
Orthodox Bishop Alfeyev: "To be a theologian means to have experience of a personal encounter with God through prayer and worship."; Orthodox proverb: "We know where the Church is, we do not know where it is not."