Some very nice improvements, Brickster. :-) The left tower looks great now, good job with that. *y*
The new wall in front looks good, but I find it a little odd how it only covers the front. That might make sense, depending on the terrain around them, or maybe look better than if it rapped all the way around... I'm not really sure. :-/
You've done a good job with the box editing, but I find both the symbols rather large and distracting. I think it would look better if you were to make them a bit smaller, and maybe use plainer images.