It would be great if the shortcuts bar on top could have customizable folders with multiple shortcuts in them. Once you click on the folder, it drops down the shortcuts within for you to click on... or expands the folder for you to choose from.
This would be similar on a desktop to placing items in a created folder.
Or on the iPad & iPhone, where you place apps together to create a folder holding multiple apps.
Safari also allows this with the Bookmarks Bar.
This would be great for Logos 4, as it would allow me to place all 5 of my "Sermon Prep" shortcuts up there while only taking up 1 place on the top shortcuts bar with a folder called "Sermon Prep".