This head movement feature (when you move your head with track ir it makes the pilot head move too) is already in an old game like Lock-in so I suppose that it will also be included in BoB.
For the rest, I'm disapointed by the poor quality of coulds and of coast lines (cliffs too) in BoB although I appreciate the quality of some other features like this fantastic 3d grass moving with the wind.
I think that in a game where the action is supposed to take place in the sky, a good photorealism of the copulds should be one of the major goals of the art director. FSX does much better and i cannot believe that it is so difficult to make nice realistc clouds with the BoB engine. The close views of the clouds looks ok but in global views it is noticable that the clouds dont have for instance the characteristic flat bottom during the afternoon when there is some hot air convection due to the sun. If the effect of the wind is modelised to impact the cloud's shape like Oleg said, I think that the wind effect physics should be reviewed.
To finish on a positive quote, I would like to say that the plane's graphycs and details looks absolutely awsome and the ground details can be compared to those of some good ground simulators like Tigers vs T34 or even better. The shadows even inside the cockpit bring a high level of immersion compared with Il2.
Finaly I think it will take long to see me online when BoB will be released. I think I will spend hours to fly around and to admire the landscapes from low altitude
Tigers vs T34 screen:
