Opinions?

Silentwind, you can't judge the bsp based on a low camera angle like that. The camera is basically ON the ground - and there's no textures or other indication of the height...

I've found you can do a decent forerunner architecture with extrudes and scales. The problem I have with my plane modeling is getting everything to be uniform...

If you use the gizmo and shift clone then you can keep the axis the same.
Also use the coordinates at the bottom to make sure everything lines up if you're having trouble.