I like how the standard of control points these days is to slap a roof on top with a couple holes in it. I'm not saying it's a bad choice, it opens up a lot of play options and fits well in TF2. But it is turning into a bit of a cliche. It'd interesting how that stuff builds up steam over time. In 2007 every CP was wide open with a few vertical components around the edges (aka granary). My in-brain timeline of maps is a bit unreliable but somewhere around the time Harvest or Coldfront hit the game, the evolution started. Now even Valve does it.