The first TANKLAND video is fantastic (haven't seen the later ones)--you say primitive but it looks fine and most of it looks scale. Well-defined roadbeds with fine powdered dirt which leaves the much desired tank tracks.

Cinder block buildings (with gabled roofs--nice touch!) are fine at this point and are certainly very stable. When people start building dedicated 1/16 buildings and features, they invariably end up looking like Candyland. No attempt at a scale effect or decent realism like with their tanks and when tanks are moving among the architecture, the effect is not good.