I have been glancing over the fortification rules and noticed that they are much better than people I seen actually use them.
Orignally I never considered using a building until tonight. I think it's rather good depending on what army you run.
To start off it seems you can damn near plop your building halfway in the middle of the board. That means possible 3 ft range from the building in any game you may play. The only draw back it has to be 3" away from another fortificatio. Heck you can put an aegis defense line in the middle of the board you wanted.
What's even better as long as you have scout you can instantly be inside even though their are enemy models near the building. I am trying to figure if the 1" rule would matter. Infiltatte I can see, but with scout that's really good. That means greyknight Paladins can start in the middle of the board.
It doesn't matter for 12 " scout movers, but rather good for 6" scout movers.
This means for example I can plop a fortress of redemption in the middle of the board and have it full of kroot or genestealers.
This would be good for melee armies who could start in the middle of the board and have a huge piece of terrain in the middle blocking Los.