You get the point, and its rather evident in more than just these few snapshots.
And its something i'm guilty of as well sometimes. Anorien has the same issue, just with one story houses. And even the mt citadel has a few gridlike spaces.
But i just feel like wherever i go, i'm met by massive walls of 3 wide arches setup in a grid. And it's not a new issue, it's been raised before http://i.imgur.com/ax7vdrI.jpg http://i.imgur.com/YpqnJBM.jpg
But i feel its become all the more prominent in southern gondor, and thought it was worth raising again.
Food for thought.