The problem is that Content is on top of the tile as viewed in game, so I had to hide them behind other content. (did that make sense?)
Put another way: If I try to hide the entertainment tile behind a wall, by simply putting it in the content slot there, it would be totally visible through the wall, and that part of the wall would be unable to be walked by. I had to put them behind a wall that already looks like it has something on it. Like, say, those data panels..
Quick Edit: Wait, oh, ha. I get what you're saying now. I just didn't want to modify the layout to accommodate for the extras, easier to hide it I think. (The general idea is that half the room is also entertainment walls, it's just not visible from our perspective of the game. Always amounts to 8 for loot value though.)