The previews look really good and why not? It is the Digital Nature engine. But there is some "things".. First, it's DirectX 9. BoS will be DX9 until such time as they feel it worth putting in DX11. Double edge sword here, but still looks good. My guess is DX11 would be implement en masse to RoF and BoS.
I am really hoping that they extend the existing online campaign engine. Myself, getting a taste for what the IL-2: Cliffs of Dover scripting can do, has really set the bar here. Compared to the issues that RoF had/has with online campaigning, IL-2 has really spoiled me here. This will end up being a really big deal for me.
Also, this better be Windows 8 compatible. I don't care about the 'metro' style but sheesh it needs to run.
While they say 'FreeTrack' will be supported I hope that doesn't mean that we get something less than full TrackIR support.
They say that Falling parts (from other aircraft) can damage your aircraft. I wonder if that means large pieces (wings or tail feathers) or small pieces too so as general debris.
Regardless of the short comings I will be getting the game. With the exception of my multiplayer expectations, and the Windows 8 support, the others are nothing more than talking points.