Seems like a waste of time to me. The time it would take the devs to code rules such as ‘one aircraft can leave once per week’ etc. could be time wasted that they could be coding global flight in.
Testing flying behind region boundaries would have zero relation or affect on future global flight. The two are actually not even related as one is very very different from the other. There is no helpful data to be gained from flying outside current regions. Global will work completely differently, and we will as always have it well tested on a multitude of devices. We always want to keep as much support as possible for as many devices as possible. Thank you though :)