I believe Oleg has the idea that the SOW world will be cinematic (highly detailed). He may not be able to pull it off in BOB, but it may come to pass in later additions when computer become powerfull enough for large detailed maps.
I agree with what you say, Chivas but I believe there are much more difficult domains to master for achieving a "realistic" feeling:
- lighting conditions rendition (=use of radiosity, specular/diffuse lighting, use of RT ray tracing)
- atmospheric transparency
- clouds
All of them being linked...I think the real issue is there, and even the most powerful computers are far from being able to pull this off in real time, not even talking about clouds! I am still waiting to see a game with proper clouds...
A lot is happening right now, and the coming into force of multi-core CPU and GPU as well as associated new scalar computation programming techniques may allow to see something interesting in the 5-6 years to come...
JV