Golden Guy, you are exactly right, would take no time at all.
Crow, that's just it. I don't think they should do a random selection. They should run some kind of a rotation. That way, if there are even only 8 basic layouts, we only see a given one one every two months.
Now, I don't know exactly how many layouts there are. But off the top of my head, I could think of enough WF HQ placements that I think it has to be at least 7, and I'm probably forgetting some. I think I'm going to investigate. I'll start taking screenshots each week.