Since they're so similar anyway why can't GS just combine them? I prefer to use the Organiser to navigate as it's more versatile, but can't plot from the organiser if I'm plotting more than 1 drawing.
The disadvantage of the organiser is of course it's wider than the navigator and therefore takes up more drawing space, a simple solution would be to provide a tab that closes/opens to make it narrow or full width.
It's not much of a variation but would make things easier for people who're new to AC.