Since the last update I have finished editing of a route schedule. I think it is easy enough to use, but it might need some more tweaking over time, and might also need some further functionalities, but for now it is working.
I have also fixed a lot of the different minor bugs as well as implementing filtering for some of the lists like airports and airliners, so it is now possible easier to select the correct items.
One of the things I have always been a little uncertain of, is how the demand between destinations should be. Currently and also in the older versions the demand have been calculated between airports, but I am currently trying to look at a way of implementing so it is calculated between the cities.
I have tried to reuse the existing demand we have set up between the airports. For a city I have defined a range which defines which airports the city is serving. When I get to calculate the actually demand for a route (if between cities) then I will do it based on distance to city, airport size as well as the number of routes between the cities. But please let me know if you have any inputs for this.