Because 4 vertexes are a heck of a lot easier to modify than 8 or 16, so I wanted to wait until I'd seen some feedback before I started working on the final smoothing. Otherwise, if I had to go back and change something, I would have done a whole lot of tinkering for nothing. So I was waiting for some feedback on the layout.
And so far, aside from the war over the shaping of the hills, it seems like the layout itself is generally liked, so if nobody has anything else to add, I'll go ahead with it.