Looks nice, but I have an idea that may be nice, but maybe impossible to you. sounds like:
-creating a new map, Omaha beach - D-day with beaches and bunkers, than you have to destroy the arty cannons firing on the beach and meet up to a crossroads somewhere.... just an example
-make in a corner of the map of the D-day mission the begining of Normandy2 map, and after regrouping at the crossroads you have to go there
-then same story for Normandy2 to Normandy3, make behind the bank, along that road where the Tiger is coming the begining of Normandy3 mission
-next, Normandy3 mission, and at the end of the bridge linking it with Normandy4 mission
If you don't understand what I mean I will be a bit more understandable
and that is linking maps together to go through more maps in one mission - it works nice also with Africa 1-5..
It might be impossible to do that.. but sounds nice, doesn't it?