lord tony, i'm pretty damn sure that blockland wasn't meant to emulate legos down to the most specific detail, it's its own game only using lego's building blocks as a concept. it features things that legos normally wouldn't have which you can easily use to enhance your creations and make it look better than if it were made in real life, not only that but it adds much more functionality than to just look at it, we have cars, guns, explosions, pseudo physics, jets, etc.
it would be extremely limiting if it were to actually be like lego. a lego city in blockland shouldn't be to look like a city out of legos in real life, but to look like an actual city.