Thanks for the interesting details. Glad to see there's an offline version that disables photogrammetry.

The church in england is a good example where a a generic rectangle building model doesn't work. They could improve the offline version by adding a church model in the set of offline models, and use it for 90% of church in western Europe.

A fully realistic model of every single building may be cool for architects, future historians, city planners, gamers that are sightseeing... but don't help much when learning to pilot. Having a virtual world that look similar to the real one, with buildings of the right size and positions, landmarks, and hero buildings is good enough, and doesn't require that much resources. There are others parts of flight simulators that are more important to work on.