Why remove the trailer scenes?

[chineseroom]

Actually, there was a pig encounter in the cage area right up until we handed it over to Frictional at the end of January. We talked a lot after that and it got removed, and the reasoning was that players would be expecting a Pig to be in the room, so we got the build of tension through the expectation. If the Pig didn't appear, it keeps the fear high as players area constantly expecting it. And you can broadside them by introducing a pig at another point in the level where it's not expected.