It's good the way that, on a PC, when MM loads it shows the name of the map in use and with the overlay information that was in use when the program was last closed (if it can find them). It would be useful if the name(s) of the overlay(s) could be shown alongside the map name in the program title bar as is normal with most applications - again if the overlay(s) have previously been named and exported. If this hasn't yet been done it could show something like "untitled".

However, bearing in mind that multiple overlays can be visible at once, some way of distinguishing them from each other would also be nice.

This would help to keep a grip on complex operations and duplication of "mmo" files when there is too much data flying around.