Hello,
I would like to suggest adding an option for identifying the active verse in Logos 4. 
Currently all we have is a Visual Cue that comes up for a second and then disappears.  And that's fine - if that's all you need.  But I usually have so much going on in my layout that it's easy to lose track of where I was or what the active verse was.
So, I would like to suggest adding an option to turn on a customizable colored highlight (you could set it to the color of your choice) that follows you from verse to verse - when you scroll.  This way you could very easily see, at a glance, which verse is active.  Several other Bible Software programs have this. 
Maybe it could be a choice as to what type of Visual Cue
you would like to see - the current one that disappears or one that
stays on the screen showing your active verse, and the active reference
in the Commentary.
Now, I do think that this should only be an option you could turn on or off, because some users may not want to have their active verse highlighted all the time and others may.
Just a suggestion - for something that would help me at least.
sdahlinghwa