I may be repeating myself since this is an old thread but I am not bothered about a few casinos floating in the skies. It the fact that all other regions are filled with all sorts of fancy lights and this brownish tone. I mean the game itself states that Duros sector is one of the poorest sectors on the already overall poor moon and yet there are these fancy lights all over the place.
From one of the poorest countries on Earth...
Point is, the Hutts and/or other criminal entities who run those sectors still see money to be made. So if putting a bunch of bright lights and neon signs up to entice the locals to spend what little credits they have, then yeah, put 'em up.
I have no problem with how the planet was designed... only the execution (another layout very close to Coruscant not long after finishing that planet).