Just to develop the idea further (since I am bored), in the future, once maintenance hangars, etc are implemented, it would be nice to have contracts which include certain number of flights to turnaround, and certain number of flights to be maintained between de-boarding and boarding.
For example: 3 flights to be handled by the airport, out of which 1 on which maintenance to be carried out.
Correspondingly, the flight that needs to be maintained would be shown with a longer duration on the flight planner.
Also, some contracts can include connecting flights that an airline wants to operate that need to be spaced within certain time of each other.
We discussed this in some detail on another thread:
How airlines schedule flights, which then turned into a discussion on how ACEO could reflect those features