I really liked the effect of the buildings greying out when you're behind them, but like xPheRe said, sometimes it does make it difficult to navigate through them. I wonder if you could fade out only the upper portions of them and leave something towards the base to make it stand out a bit more. Other than that, I enjoyed it! I imagine the world you have now combined with the art in your game picture will look pretty sick. I'm looking forward to playing it again when it's done!