Long term, Outerra flight physics will be better (blade element theory) but at the moment, FSX can do better. Flight behaviour on its own is better than FSX at the moment but everything else is missing.
NavAids, Autopilot, Atc, weather effects, turbulence... These kind of things.
Ok I see what you're saying but you can't just 'suck in' a navaid from FSX... because there's no interaction with it through a GUI.
And a navaid is a beacon... ie a fixed point on the planet that has a known co-ordinate that an instrument within a planes cockpit gives directions too.... ALL of that can be done now... if we had a 2d GUI...
Autopilot.... yet again no 2d gui..
weather.... that's a good one, but even if rain was brought in tomorrow it would only be visual because non of the flight models are set up to interect with water ingress...
ALL the potential is here in Outerra, it's not a mish mash of FSX, ANOther flightsim and Outerra's terrain, running side by side.
I aplaud what's been done within this thread as an excercise of using another application within Outerra, and personally would love to see another aplication used as a supply chain manager, directing AI components through autopilot/waypoint commands to deliver goods from point to point based on data (supply and demand) at various nodes. I think if we had this, used in both commercial and military roles, which was then taken to online play the potential interaction you'd have with your environment would be massive...
Good luck with whats being done at present though... I do applaud it
regards
Simon