Hi!
As AM uses GCMap as its main map source, I am puzzled why you don't use the new AM-maps.
They have different zoom-levels, so you don't have to close a couple of routes to get your map back to normal.
Different colours can be used to reflect fleet movements, together with the airline as a whole. This way it is easier to see the differences between the different fleets.
Hubs can get dots, so you can see what is hubs, and what is not (alliance hubs).
I hope these suggestions gets considered, or that we at least can get the new GCMap.