I see in the listed features for logos 4 an amazing amount of emphasis on visual aids. This is great, especially since it will be able to export to powerpoint ( and hopefully keynote through clipping). I think it would be great to have an ability to include one's own pictures in the database of biblical things and places.
In other words, if I am looking up the garden tomb, it would be nice to be able to include my own pictures of the tomb to make future searching for pictures easy. No need to open iphoto when logos is already open.