Very minor enhancement:
The drop down, after selecting multiple routes has several option, such as close routes (keep slots). Another option would that might be useful is "Remove Flights from Schedule".
Example where this might be useful: when a flight is a 7 day schedule flight, clicking on that flight from Route Planning brings up the Manage Routes screen. If I wand to unscheduled all 7 components, it would be nice to do it all at once quickly, rather than doing it on the schedule screen.