Some moving units still show the campfire icon.
And conversely, some encamped units do not show the icon, whether zoomed in or zoomed out.
Suggestion: When slaves are selected as part of a group, put a number on the tile to tell how many there are, so you won't have to move your mouse over everything looking for the sizes you want.
Suggestion: When you are zoomed out and looking at units that are moving, put the solid models in their actual positions and the ghosted models at their destinations - i.e., the opposite of what you do now.