Compatibility: If the user plans to use other mods, they need to know if this mod works well with popular ones like Ferram Aerospace, Realism Overhaul, etc. Also, compatibility with versions of KSP. The mod is likely for a specific version, so version compatibility is crucial.
Another point: The original Flight of the Swallow mod is inspired by real-world aircraft and adds a more realistic flight experience. The fixed version might correct some issues that made the planes either too powerful or too fragile, balancing them properly. flight of the swallow v09113 by marinekelley fixed
Also, the flight model compatibility with other mods—does it conflict with the KSP's internal flight calculations when used with mods like Kethane or Kerbal Atomics that add new fuels or parts? Compatibility: If the user plans to use other
If there are new parts or blueprints, the mod might offer a new challenge in building planes instead of just using pre-made ones. Another point: The original Flight of the Swallow